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h103efa

Silver Premium Member
  • Content Count

    503
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    United Kingdom

Reputation Activity

  1. Thanks
    h103efa got a reaction from Serendipity in How Many People Own Gold?   
    Agree. Among Asian family and friends, everyone owns gold jewellery and "guineas". But with social and work friends and colleagues not many at all for both. 
  2. Like
  3. Like
    h103efa got a reaction from Elements in Red spotted/finger printed proof sovereigns   
    Biochem Rules!
    I certainly enjoyed seeing some chem redox reactions on here @Elements
    I'll also have a good look at some of the journal links and corresponding citations/references. I'll also go see some of the chem guys at work and see what they have to say!
  4. Like
    h103efa reacted to Elements in Red spotted/finger printed proof sovereigns   
    see these academic papers. XPS is a great analytical instrument but prohibitively expensive bit of kit
    It and other techniques likely point to silver sulfide, but can’t rule out copper oxide.
    https://www.zlate-cihly.cz/Red_dot_on_coins_surface.pdf
    https://www.researchgate.net/profile/Saulius_Kaciulis/publication/234224608_Gold_corrosion_red_stains_on_a_gold_Austrian_Ducat/links/0deec52deb060ed2a1000000/Gold-corrosion-red-stains-on-a-gold-Austrian-Ducat.pdf?origin=publication_detail
    https://www.sciencedirect.com/science/article/abs/pii/S0168583X12007987
    https://www.sciencedirect.com/science/article/pii/S1001052107600308
     
    The chemistry is similar to that well known for removing tarnish from silver coins, since the tarnish is likely Ag2S in both cases looking at the above research papers (even if it’s copper the same process works) a similar treatment should and did work.
    To find out why the chemistry behind the silver tarnish removal (and similar process here) I point you to redox potentials of the reactions:
    Cu2O(s)+H2O+2e- <—> 2Cu(s)+OH-        -0.36
    Al3+ + 3e- <—> Al(s)                                   -1.662
    Ag2S(s) + 2e-   <—> 2Ag(s)+ S2-(aq)       -0.69
    The more negative the potential the more the equilibrium lies to the left. Since Al can easily donate electrons to either silver sulfide or copper oxide it can reduce either.  Another forum member did this recently on his libertad and worked, the above is the reason why.
    @Serendipity
  5. Haha
    h103efa got a reaction from Tn21 in Royal Mint Sovereign Storage   
    Haha, I know this pain. But I use it as an excuse to fondle them and put them back in order etc in preparation for thr next sneeze! 
  6. Thanks
    h103efa got a reaction from Cornishfarmer in 50p mintages   
    I see the 2018 circulating coin mintages have beeen released. 
    Those with Peter Rabbit eating radishes or flopsy will be happy. Less than puddleduck which can sell for over a tenner! 
    https://www.royalmint.com/currency/uk-currency/mintages/50-pence/
  7. Thanks
    h103efa got a reaction from kimchi in 50p mintages   
    I see the 2018 circulating coin mintages have beeen released. 
    Those with Peter Rabbit eating radishes or flopsy will be happy. Less than puddleduck which can sell for over a tenner! 
    https://www.royalmint.com/currency/uk-currency/mintages/50-pence/
  8. Haha
    h103efa got a reaction from TonyS in Royal Mint Sovereign Storage   
    Haha, I know this pain. But I use it as an excuse to fondle them and put them back in order etc in preparation for thr next sneeze! 
  9. Haha
    h103efa got a reaction from jultorsk in Royal Mint Sovereign Storage   
    Haha, I know this pain. But I use it as an excuse to fondle them and put them back in order etc in preparation for thr next sneeze! 
  10. Haha
    h103efa got a reaction from mattitto in Royal Mint Sovereign Storage   
    Haha, I know this pain. But I use it as an excuse to fondle them and put them back in order etc in preparation for thr next sneeze! 
  11. Like
    h103efa got a reaction from Bullionaire in New Coins for 2020 Agatha Christie, Victory In Europe, Una Lion, Brexit   
    Gold and Silver Una & Lion coins
    https://www.thegazette.co.uk/notice/3402768
    the reverse a depiction of the figure Una from Edmund Spencer’s The Faerie Queen leading a lion with the inscription “DIRIGE DEUS GRESSUS MEOS” and the date in roman numerals. 
    https://www.thegazette.co.uk/notice/3402770
    Brexit 50p - ‘For the obverse impression Our effigy with the inscription “· ELIZABETH II · D · G · REG · F · D · 50 PENCE” and the date of the year, and for the reverse the inscription “PEACE, PROSPERITY AND FRIENDSHIP WITH ALL NATIONS” accompanied by the date 31 October 2019. The coin shall have a plain edge.’
    https://www.thegazette.co.uk/notice/3402765
    The designs of the said two pound gold, silver, silver piedfort, cupro-nickel and nickel-brass coins shall be either:
    (a) ‘For the obverse impression Our effigy with the inscription “· ELIZABETH II · D · G · REG · F · D · 2 POUNDS”, and for the reverse a nearly completed jigsaw puzzle with the final piece about to be inserted, accompanied by the inscription “1920 100 YEARS OF MYSTERY 2020” and Agatha Christie’s signature. The coin shall have a grained edge and in incuse letters the inscription “LITTLE GREY CELLS”, save for the gold coin where the incuse letters shall be accompanied by a plain edge’; or
    (b) ‘For the obverse impression Our effigy with the inscription “· ELIZABETH II · D · G · REG · F · D · 2 POUNDS”, and for the reverse a woman holding a newspaper aloft in a celebrating crowd set against the backdrop of the word VICTORY, accompanied by the inscription “VICTORY IN EUROPE DAY” and the dates “1945 – 2020”. The coin shall have a grained edge and in incuse letters the inscription “JUST TRIUMPH AND PROUD SORROW”, save for the gold coin where the incuse letters shall be accompanied by a plain edge’.
  12. Super Like
    h103efa got a reaction from Oldun in New Coins for 2020 Agatha Christie, Victory In Europe, Una Lion, Brexit   
    Gold and Silver Una & Lion coins
    https://www.thegazette.co.uk/notice/3402768
    the reverse a depiction of the figure Una from Edmund Spencer’s The Faerie Queen leading a lion with the inscription “DIRIGE DEUS GRESSUS MEOS” and the date in roman numerals. 
    https://www.thegazette.co.uk/notice/3402770
    Brexit 50p - ‘For the obverse impression Our effigy with the inscription “· ELIZABETH II · D · G · REG · F · D · 50 PENCE” and the date of the year, and for the reverse the inscription “PEACE, PROSPERITY AND FRIENDSHIP WITH ALL NATIONS” accompanied by the date 31 October 2019. The coin shall have a plain edge.’
    https://www.thegazette.co.uk/notice/3402765
    The designs of the said two pound gold, silver, silver piedfort, cupro-nickel and nickel-brass coins shall be either:
    (a) ‘For the obverse impression Our effigy with the inscription “· ELIZABETH II · D · G · REG · F · D · 2 POUNDS”, and for the reverse a nearly completed jigsaw puzzle with the final piece about to be inserted, accompanied by the inscription “1920 100 YEARS OF MYSTERY 2020” and Agatha Christie’s signature. The coin shall have a grained edge and in incuse letters the inscription “LITTLE GREY CELLS”, save for the gold coin where the incuse letters shall be accompanied by a plain edge’; or
    (b) ‘For the obverse impression Our effigy with the inscription “· ELIZABETH II · D · G · REG · F · D · 2 POUNDS”, and for the reverse a woman holding a newspaper aloft in a celebrating crowd set against the backdrop of the word VICTORY, accompanied by the inscription “VICTORY IN EUROPE DAY” and the dates “1945 – 2020”. The coin shall have a grained edge and in incuse letters the inscription “JUST TRIUMPH AND PROUD SORROW”, save for the gold coin where the incuse letters shall be accompanied by a plain edge’.
  13. Like
    h103efa got a reaction from CadmiumGreen in Wallace and Grommet the next 50p?   
    Well here is the proclamation for the W & G 50p. 
    “CASEUS PRAESTANS" = Excellent Cheese
    Also details of the next gruffalo and snowman 50p coins...
    https://www.thegazette.co.uk/notice/3402761
    DESIGNS OF THE COINS
    4. The design of the said fifty pence gold, silver and cupro-nickel coins shall be as follows:
    ‘For the obverse impression, Our effigy with the inscription “· ELIZABETH II · D · G · REG · F · D · 50 PENCE” and the date of the year and for the reverse either:
    (a) the figures of Wallace and Gromit with the inscription “CASEUS PRAESTANS” and “WALLACE GROMIT”; or
    (b) the figure of a snowman and a boy; or
    (c) the Gruffalo confronting a mouse in a wood with the inscription “THE GRUFFALO”.
  14. Thanks
    h103efa got a reaction from danmc82 in New Coins for 2020 Agatha Christie, Victory In Europe, Una Lion, Brexit   
    Gold and Silver Una & Lion coins
    https://www.thegazette.co.uk/notice/3402768
    the reverse a depiction of the figure Una from Edmund Spencer’s The Faerie Queen leading a lion with the inscription “DIRIGE DEUS GRESSUS MEOS” and the date in roman numerals. 
    https://www.thegazette.co.uk/notice/3402770
    Brexit 50p - ‘For the obverse impression Our effigy with the inscription “· ELIZABETH II · D · G · REG · F · D · 50 PENCE” and the date of the year, and for the reverse the inscription “PEACE, PROSPERITY AND FRIENDSHIP WITH ALL NATIONS” accompanied by the date 31 October 2019. The coin shall have a plain edge.’
    https://www.thegazette.co.uk/notice/3402765
    The designs of the said two pound gold, silver, silver piedfort, cupro-nickel and nickel-brass coins shall be either:
    (a) ‘For the obverse impression Our effigy with the inscription “· ELIZABETH II · D · G · REG · F · D · 2 POUNDS”, and for the reverse a nearly completed jigsaw puzzle with the final piece about to be inserted, accompanied by the inscription “1920 100 YEARS OF MYSTERY 2020” and Agatha Christie’s signature. The coin shall have a grained edge and in incuse letters the inscription “LITTLE GREY CELLS”, save for the gold coin where the incuse letters shall be accompanied by a plain edge’; or
    (b) ‘For the obverse impression Our effigy with the inscription “· ELIZABETH II · D · G · REG · F · D · 2 POUNDS”, and for the reverse a woman holding a newspaper aloft in a celebrating crowd set against the backdrop of the word VICTORY, accompanied by the inscription “VICTORY IN EUROPE DAY” and the dates “1945 – 2020”. The coin shall have a grained edge and in incuse letters the inscription “JUST TRIUMPH AND PROUD SORROW”, save for the gold coin where the incuse letters shall be accompanied by a plain edge’.
  15. Thanks
    h103efa got a reaction from kimchi in Here we go again- Gruffalo is back   
    and for @kimchi Snowman no2
    https://www.thegazette.co.uk/notice/3402761
    DESIGNS OF THE COINS
    4. The design of the said fifty pence gold, silver and cupro-nickel coins shall be as follows:
    ‘For the obverse impression, Our effigy with the inscription “· ELIZABETH II · D · G · REG · F · D · 50 PENCE” and the date of the year and for the reverse either:
    (b) the figure of a snowman and a boy;
  16. Like
    h103efa got a reaction from Zhorro in New Coins for 2020 Agatha Christie, Victory In Europe, Una Lion, Brexit   
    Gold and Silver Una & Lion coins
    https://www.thegazette.co.uk/notice/3402768
    the reverse a depiction of the figure Una from Edmund Spencer’s The Faerie Queen leading a lion with the inscription “DIRIGE DEUS GRESSUS MEOS” and the date in roman numerals. 
    https://www.thegazette.co.uk/notice/3402770
    Brexit 50p - ‘For the obverse impression Our effigy with the inscription “· ELIZABETH II · D · G · REG · F · D · 50 PENCE” and the date of the year, and for the reverse the inscription “PEACE, PROSPERITY AND FRIENDSHIP WITH ALL NATIONS” accompanied by the date 31 October 2019. The coin shall have a plain edge.’
    https://www.thegazette.co.uk/notice/3402765
    The designs of the said two pound gold, silver, silver piedfort, cupro-nickel and nickel-brass coins shall be either:
    (a) ‘For the obverse impression Our effigy with the inscription “· ELIZABETH II · D · G · REG · F · D · 2 POUNDS”, and for the reverse a nearly completed jigsaw puzzle with the final piece about to be inserted, accompanied by the inscription “1920 100 YEARS OF MYSTERY 2020” and Agatha Christie’s signature. The coin shall have a grained edge and in incuse letters the inscription “LITTLE GREY CELLS”, save for the gold coin where the incuse letters shall be accompanied by a plain edge’; or
    (b) ‘For the obverse impression Our effigy with the inscription “· ELIZABETH II · D · G · REG · F · D · 2 POUNDS”, and for the reverse a woman holding a newspaper aloft in a celebrating crowd set against the backdrop of the word VICTORY, accompanied by the inscription “VICTORY IN EUROPE DAY” and the dates “1945 – 2020”. The coin shall have a grained edge and in incuse letters the inscription “JUST TRIUMPH AND PROUD SORROW”, save for the gold coin where the incuse letters shall be accompanied by a plain edge’.
  17. Thanks
    h103efa got a reaction from danmc82 in Wallace and Grommet the next 50p?   
    Well here is the proclamation for the W & G 50p. 
    “CASEUS PRAESTANS" = Excellent Cheese
    Also details of the next gruffalo and snowman 50p coins...
    https://www.thegazette.co.uk/notice/3402761
    DESIGNS OF THE COINS
    4. The design of the said fifty pence gold, silver and cupro-nickel coins shall be as follows:
    ‘For the obverse impression, Our effigy with the inscription “· ELIZABETH II · D · G · REG · F · D · 50 PENCE” and the date of the year and for the reverse either:
    (a) the figures of Wallace and Gromit with the inscription “CASEUS PRAESTANS” and “WALLACE GROMIT”; or
    (b) the figure of a snowman and a boy; or
    (c) the Gruffalo confronting a mouse in a wood with the inscription “THE GRUFFALO”.
  18. Thanks
    h103efa got a reaction from danmc82 in Here we go again- Gruffalo is back   
    https://www.thegazette.co.uk/notice/3402761
    the Gruffalo confronting a mouse in a wood with the inscription “THE GRUFFALO”.
  19. Thanks
    h103efa got a reaction from MickD in Wallace and Grommet the next 50p?   
    Well here is the proclamation for the W & G 50p. 
    “CASEUS PRAESTANS" = Excellent Cheese
    Also details of the next gruffalo and snowman 50p coins...
    https://www.thegazette.co.uk/notice/3402761
    DESIGNS OF THE COINS
    4. The design of the said fifty pence gold, silver and cupro-nickel coins shall be as follows:
    ‘For the obverse impression, Our effigy with the inscription “· ELIZABETH II · D · G · REG · F · D · 50 PENCE” and the date of the year and for the reverse either:
    (a) the figures of Wallace and Gromit with the inscription “CASEUS PRAESTANS” and “WALLACE GROMIT”; or
    (b) the figure of a snowman and a boy; or
    (c) the Gruffalo confronting a mouse in a wood with the inscription “THE GRUFFALO”.
  20. Haha
    h103efa reacted to vicamy in 2016 half proof sovereign   
    He probably is there already if it is the shop. I think it is a good combination of gold and p...🤔😉😁
  21. Like
    h103efa reacted to Tn21 in Pamp 5g bar, is it genuine or not ?   
    Thank you all once again for the advice and information. With help from a fellow forum member we have come to a conclusion that the bar is genuine. 
    Bar lives on to see another day.


  22. Like
    h103efa got a reaction from Csaba in Today I Received.....   
    Like @AgD, also received a 2 oz silver Aztec Calendar from @SilverStan
    Nicely goes with the rest of the family!


  23. Thanks
    h103efa got a reaction from AndrewSL76 in Berlin Advice - Shops, Dealers etc.   
    Try this site gold.de
    Then hopefully with google translate and some searching you might be able to find some bullion dealers in Berlin...
  24. Like
    h103efa got a reaction from silversurf in Today I Received.....   
    Like @AgD, also received a 2 oz silver Aztec Calendar from @SilverStan
    Nicely goes with the rest of the family!


  25. Like
    h103efa got a reaction from Zhorro in Today I Received.....   
    Like @AgD, also received a 2 oz silver Aztec Calendar from @SilverStan
    Nicely goes with the rest of the family!