Gold coin conservation pictures

[Darr3nG]

5 minutes ago, GoldDiggerDave said:

 I am working on a workaround with milk spots

melting pot?  

[GoldDiggerDave]

I paid £20 for the silver proof Jubilee Crown at an antique shop a few weeks ago, Obverse was not that bad just foggy and greasy the reverse had signs of toning and the rim was heavily toned.    

Removed the toning from the fields on the reverse and most of the heavy toning around the rim.  

 

[modofantasma]

On 30/05/2022 at 14:02, Darr3nG said:

melting pot?  

Colourised beauties 🤣

[Arganto]

@GoldDiggerDave are you going to offer this as a service at some point in the future? If not will you 'open source' your techniques when you see fit?

I don't expect you too, especially if it's to be a business venture, but you've hit upon a clearly successful way of cleaning coins without adding abrasion. Kudos.

[GoldDiggerDave]

@Arganto Yes I will be offering this as a service in addition to my NGC grading soon.  I have been working on serval processes to get the best results, also working on removing the appearance of milk spots on silver bullion coins.   

[GoldDiggerDave]

One I did yesterday numerous copper spots on both sides of the 1911 half sovereign.  Results are good 

[SidS]

I know it's weird, but I actually like copper spots on gold coins.

[Orpster]

1 hour ago, SidS said:

I know it's weird, but I actually like copper spots on gold coins.

Same, and I like toning on old coins as well.  Don't even mind a bit of milking on modern silver coins.

That's would not be most peoples view though, great job  @GoldDiggerDave must be a knack to doing it without getting the tell-tale 'cleaning' lines not sure I would be brave enough with my 10 thumbs but that looks like a top job

[Booky586]

2 hours ago, GoldDiggerDave said:

One I did yesterday numerous copper spots on both sides of the 1911 half sovereign.  Results are good 

I'd be interested to know the technique you're using to remove copper sports on gold. I've heard you can heat treat them but I've never tried this yet.

[GoldDiggerDave]

@Orpster cheers mate, half of the challenge is having the confidence to handle the coin carefully.  

[GoldDiggerDave]

@Booky586 heat or acid works well however there is risk involved, and obvious health and safety is needed.

 

 

[GoldDiggerDave]

Just working on milking I can perfect this process more, the concept works?  What do you think?  Before and after video.

96-97% of the visible milking has gone.

 

 

Edited June 18, 2022 by GoldDiggerDave

[modofantasma]

33 minutes ago, GoldDiggerDave said:

Just working on milking I can perfect this process more, the concept works?  What do you think?  Before and after video.

96-97% of the visible milking has gone.

 

 

1.MOV 2.MOV

I can't seem to view them (on a phone) could easily be a user error at my end 🤣 Anyone else?

[GoldDiggerDave]

@modofantasma I’ll add a few photos, I did as a video as it’s easy to make a coin look good from one angle.  Not perfect yet .

 

[modofantasma]

I can see those. Yes far better looking. Do you think it's worth doing on bullion?  I could see that it might be worthwhile on higher premium coins perhaps if it were to restore their premium... but more a question of time and effort involved is it scalable to do batches at once?

[GoldDiggerDave]

1 minute ago, modofantasma said:

I can see those. Yes far better looking. Do you think it's worth doing on bullion?  I could see that it might be worthwhile on higher premium coins perhaps if it were to restore their premium... but more a question of time and effort involved is it scalable to do batches at once?

I’m just doing this on silver bullion for now as if I muller one of them it’s not a issue just to see if the chemistry works.   For bullion I could do a tube in about 1 hour using this process.

I did a batch of 91 silver proof coins in 4 hours  when I conserved those a while ago. 
 

The silver bullion milk removal is just for a bit of fun and  it’s meditation for me if I get any grotty silvers I can make them look better. 

[modofantasma]

3 minutes ago, GoldDiggerDave said:

I’m just doing this on silver bullion for now as if I muller one of them it’s not a issue just to see if the chemistry works.   For bullion I could do a tube in about 1 hour using this process.

I did a batch of 91 silver proof coins in 4 hours  when I conserved those a while ago. 
 

The silver bullion milk removal is just for a bit of fun and  it’s meditation for me if I get any grotty silvers I can make them look better. 

Yeah it's interesting to learn the process I imagine.

 

[Goldfever20]

1 hour ago, GoldDiggerDave said:

I’m just doing this on silver bullion for now as if I muller one of them it’s not a issue just to see if the chemistry works.   For bullion I could do a tube in about 1 hour using this process.

I did a batch of 91 silver proof coins in 4 hours  when I conserved those a while ago. 
 

The silver bullion milk removal is just for a bit of fun and  it’s meditation for me if I get any grotty silvers I can make them look better. 

Great job @GoldDiggerDave

Would you mind to share the technique you use? I would like to try it on some silver coins first.

[Gruff]

Jeepers Dave, the results are amazing!