1oz britannia

[HappyGirl1]

Just picked myself up my first  1oz 2015 Britannia coin , looks lovely .

I don't know a lot about this coin I know Britannia coins come in 22 and 24 ct ,  I was wondering as this was a mixed date coin  how  can I  tell what ct my coin is ?

Also would like to know what weight these coins can  be?  mine is 31.247g   thickness is slightly over 2 mm . 

 

 

 

 

[fehk2001]

From 2013 the gold coins have a millesimal fineness of .9999 (or 24 carat gold). Until 2012 the gold coins have a millesimal fineness of .917 (91.7% or 22 carat gold) with the non-gold component being copper until 1989 and silver from 1990.

2013– Gold Britannia specifications (gold content, and approx total weight)

Five ounces: diameter 65 mm, (156.295 g)

One ounce (2013) : diameter 38.61 mm, (31.104 g) 'larger thinner coin' just for 2013

One ounce (2014–) : diameter 32.69 mm, (31.104 g)

Half ounce: diameter 27 mm, (15.60 g)

One quarter ounce: diameter 22 mm, (7.86 g)

One tenth ounce: diameter 16.50 mm, (3.13 g)

One twentieth ounce: diameter 12 mm, (1.58 g)

1987–2012 Gold Britannia specifications(gold content, not total weight)

One ounce: diameter 32.69 mm, (31.104 g) (total wt 34.050 g)

Half ounce: diameter 27.00 mm, (15.552 g)

Quarter ounce: diameter 22.00 mm,(7.776 g)

Tenth ounce: diameter 16.50 mm, (3.110 g)

 

 

 

[HappyGirl1]

Is they any reason why mine should weight more or is that normal ?

[augur]

Just now, HappyGirl1 said:

Is they any reason why mine should weight more or is that normal ?

They should always weigh slightly more unless they are circulation coins (not the case). Also your scale might not be 100% accurate but I would expect it to be more 31,14-31,18g. 

38 minutes ago, HappyGirl1 said:

thickness is slightly over 2 mm

Thickness is is sometimes hard to measure as some (proof) coins have a protective edge on the rim.  But if that is not the case your coin might not be golden inside...

 

 

From the Royal Mint:

2013 UK Bullion Range Specifications: 

Description	Gold Britannia Bullion	Silver Britannia Bullion	Gold Bullion Sovereign
Alloy	0.9999 Au fine gold	0.999 Ag fine silver	0.9167 Au 22 carat gold
Metal Content (Troy oz)	1	1	0.2354
Minimum Gross Weight	31.1035g	31.1035g	7.98g
Diameter	38.61mm	38.61mm	22.05mm
Thickness	1.58mm-1.65mm	2.97mm-2.98mm	1.69mm

[HappyGirl1]

14 minutes ago, augur said:

They should always weigh slightly more unless they are circulation coins (not the case). Also your scale might not be 100% accurate but I would expect it to be more 31,14-31,18g. 

Thickness is is sometimes hard to measure as some (proof) coins have a protective edge on the rim.  But if that is not the case your coin might not be golden inside...

 

 

From the Royal Mint:

2013 UK Bullion Range Specifications: 

Description	Gold Britannia Bullion	Silver Britannia Bullion	Gold Bullion Sovereign
Alloy	0.9999 Au fine gold	0.999 Ag fine silver	0.9167 Au 22 carat gold
Metal Content (Troy oz)	1	1	0.2354
Minimum Gross Weight	31.1035g	31.1035g	7.98g
Diameter	38.61mm	38.61mm	22.05mm
Thickness	1.58mm-1.65mm	2.97mm-2.98mm	1.69mm

Do you think I should take it back the weight I get is  - 31.247g    - 31.249 g

[augur]

4 minutes ago, HappyGirl1 said:

Do you think I should take it back the weight I get is  - 31.247g    - 31.249 g

Can you measure diameter and thickness and post pictures?

If you bought it from a reputable dealer, they will be happy to check or exchange. On eBay you can request a return and refund if you think it's not genuine. 

[Gradius]

The weight of the 2015 britannia should actually be 31.21g.

Source: The Royal Mint

https://www.royalmintbullion.com/Products/Britannia/Gold/UKB15GS

[fehk2001]

Where did you buy urs from 

[HelpingHands]

Coins will vary ever so slightly.

Also scales aren't often precise.

I wouldn't worry if you've bought from a known dealer.

[sixgun]

Your coin is within the legal tolerance for a gold 1oz Britannia.

https://www.thegazette.co.uk/notice/L-60304-1693452

Quote

 

"A new coin of gold of the denomination of one hundred pounds shall be made, being a coin of a standard weight of 31.210 grammes..." [with] "variation from the said standard weight of an amount per coin of 0.100 grammes;.."

 

 

[HappyGirl1]

https://imgur.com/a/QBjRj

https://imgur.com/a/xguma

When I measured the thickness of the coin I can only measure the rim of the coin which is about 2mm but the middle is less .

I Got this coin from  hgm dealer which seems good .

[fehk2001]

57 minutes ago, HappyGirl1 said:

https://imgur.com/a/QBjRj

https://imgur.com/a/xguma

When I measured the thickness of the coin I can only measure the rim of the coin which is about 2mm but the middle is less .

I Got this coin from  hgm dealer which seems good .

No worries , must be genuine