Gold coin conservation pictures

[GoldDiggerDave]

Just some before and after pictures,  did this 1/2 1913 today,  it's revealed a few copper spots that I will remove and show you the results if it's successful .

The coin still has a decent amount of original lustre. 

 

[RDHC]

Looks good, but how did you do it, please?

[GoldDiggerDave]

@RDHC I use an ultrasonic tank for the 1/2 sovereign and a few other process I’m working to perfect the process.  I can only presume it’s very similar to the conservation process the grading companies use. 
 

I’ll doing a my very toned silver proof £1 set soon I’ll pop up a few pictures. 

Also have a proof sovereign with finger prints so wi be removing that soon. 
 

 

 

 

 

 

 

 

 

[RDHC]

23 minutes ago, GoldDiggerDave said:

@RDHC I use an ultrasonic tank for the 1/2 sovereign and a few other process I’m working to perfect the process.  I can only presume it’s very similar to the conservation process the grading companies use. 
 

I’ll doing a my very toned silver proof £1 set soon I’ll pop up a few pictures. 

Also have a proof sovereign with finger prints so wi be removing that soon. 
 

 

 

 

 

 

 

 

 

Thank you. Very interesting. Please keep us informed. You might have the makings of a business here.

Roger

[GoldDiggerDave]

@RDHC Thanks mate, I've been doing  this for a while I'm also doing NGC submissions for people now got a few TSF members.   With coin conservation is a 50/50 process.   50% having the skill and 50% having the confidence of handling the coin safety  bullion sovereigns are easier proof coins are less forgiving.    

I'll keep the post up to date with more of my coins.   Cheers 👍

 

[GoldDiggerDave]

This is an 1874 London a few before and after the process, not the best condition young head but a nice coin and it's turned out well. 

I took a before and after next to a graded coin to try and show a benchmark.

Edited May 9, 2022 by GoldDiggerDave

[GoldDiggerDave]

This is a the 1913 half sovereign from above, it did reveal some small copper spots around 3 o'clock on the reverse, I have now removed these and the results are good. 

 

[CoinStruck]

Very impressive 

[RDHC]

42 minutes ago, CoinStruck said:

Very impressive 

Absolutely.

[GoldDiggerDave]

Not gold this time, a grotty toned ASE, 

Some before and afters, the result are good, 

Tone as gone, surface much better, overall  much more pleasing on the eye.  

[Darr3nG]

3 minutes ago, GoldDiggerDave said:

Some before and afters, the result are good, 

Looks fantastic, Dave. Well done.

Does it take long, and does it cost much in materials... is it worth cleaning a whole bunch of cheap bullion?

[GoldDiggerDave]

Just now, Darr3nG said:

Looks fantastic, Dave. Well done.

Does it take long, and does it cost much in materials... is it worth cleaning a whole bunch of cheap bullion?

I could do a full tube in 1 hour.  And it’s not expensive. 

[MetalMandible]

32 minutes ago, GoldDiggerDave said:

Not gold this time, a grotty toned ASE, 

Some before and afters, the result are good, 

Tone as gone, surface much better, overall  much more pleasing on the eye.  

Bravo sir!  I have more than a few tubes that could really use this voodoo treatment.

[kimchi]

Dave, have you had any older coins that you've 'conserved' graded yet like that Sov?

I know people who do their own conservation on modern proofs and manage to get the grades up. But I wonder if NGC etc would call these cleaned, not because of any evidence, just because they look far too good and clean to have survived 'naturally' like that.

[GoldDiggerDave]

@kimchi  Yes I’ve had some sovereigns graded and had some mega results.  The dreaded “details” can be where someone has taken a polishing cloth or used cotton buds and there’s obvious swirl marks, or polished high points.   Seen on older silvers “altered surface” 

I will be putting in a few 1/2 bullion sovereigns in for grading in my next batch not expecting silly high grades.  I would not do old silver. 

Just did  the bullion silver rounds for fun to see the difference, I’m doing a silver proof set this evening as this is has toned quite bad and got grotty, I will conserve modern silver proof coins as it does make them more appealing.  
 

 

Edited May 13, 2022 by GoldDiggerDave

[GoldDiggerDave]

Today is my silver proof £1 set these have all got black grotty tone around the edge and some are worse than other. I’m doing 12 this afternoon done 6. 
 

This is just 1 coin before and after the results? 

[Dazlenk]

30 minutes ago, GoldDiggerDave said:

Today is my silver proof £1 set these have all got black grotty tone around the edge and some are worse than other. I’m doing 12 this afternoon done 6. 
 

This is just 1 coin before and after the results? 

That looks fantastic Dave, maybe you could do that football coin for me? it's only a fingerprint should be childs play for you! lol

[GoldDiggerDave]

@Dazlenk yes not a problem mate. 
it’s easy to shift finger marks 

[dicker]

Fantastic results particularly on the £1’s.

Best

Dicker

[GoldDiggerDave]

2017 proof 1/4 Krugerrand, can't do anything with the slight contact mark it's very hard to see with a loupe just the Iphone 13 pro macro is brutal.

Given the coin bags more eye appeal, removed the grease, spotty finish.  

 

[SidS]

I love what you've done to the proof coins, the £1 coin and the Kruggerands! They look fab.

[CoinStruck]

Very impressive indeed!

In terms of what you do to conserve proof coins is this different to what say NGC or PCGS does when coins are sent in for their conservation and grading service? 

[Oddjob]

Loving the results you are getting...some stunners there.

Have you tried a Ag round with milk spots to see if they come off?...I'm kinda of assuming they would given the results above, but interested to know if you had the opportunity to try and combat the scourge of Maple stackers.

 

[GoldDiggerDave]

@CoinStruck it’s hard to say as the NGC and PCGS have proprietarily conservation processes, I would pay very good money to see the techniques they use.  
 

I have had very good results with bullion sovereigns that I have sent to the NGC they most definitely don’t come back with the dreaded “details”.

I have been working on my own process and techniques and continually update the best process,  the 1/4 Krugerrand has a small spot on the obverse on his cheek, I’ll give it another go.  
 

With some coins they need 3-4 attempts to remove the unwanted marks.  

[GoldDiggerDave]

@Oddjob I am working on a workaround with milk spots it’s impossible to remove them however I’m working on something that may help the appearance of silver bullion coins.  

A few weeks away at the moment but will post some pictures if it works.