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 Replies: 10 / Views: 1,540 |
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CCF Advertiser
 United States
1306 Posts |
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Pillar of the Community
United States
3444 Posts |
Green is one thing
But red is quite another thing isn't it
The red 'stuff' tends to be quite hard and resistant to brushing away
The coin has a rather thick layer of patination which is both good .......
and bad
The rough spots will not simply come off as they are a part of the oxidation
Remove one and you are likely to remove the other leaving an unpleasant looking metal surface
I might try an overnight bath in white vinegar
Followed by a gentle brass brushing
But if it fails disastrously
Don't blame me !
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Moderator
United States
23731 Posts |
I've used a diluted solution of Lime Away to remove heavy encrustation like this. It softens the encrustation but doesn't hurt the rest of the coin. As with any use of chemicals you have to be careful.
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Moderator
United States
56855 Posts |
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Pillar of the Community
 United States
3098 Posts |
I've used CLR in the past, but didn't find the results very satisfying, so I stopped using it.
Paul Bulgerin
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Pillar of the Community
United States
1120 Posts |
I've tried CLR, Vinegar and even "Coin & Artifact Ancient Bronze Cleaner". For all these methods, its all or nothing. Meaning that if left for too long you will strip the coin. From my experience, I would leave it. The encrustation will come off .... Along with everything else.
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CCF Advertiser
 United States
1306 Posts |
Wow;
If I would have done this, which I won't as I said, I would have defaulted to soaking in olive oil, remove after a week, have a table mounted magnifying glass out with a box of toothpicks, work for a half hour, then soak in olive oil for another week and repeat the process. In about 6 months hopefully I'd be down to the letters and carefully working around them with the tooth picks. That sounds so tedious now and maybe if this was a rare coin that would be a good option but for this one it would be more of a waste of time. But so is playing a video game or scrolling through the internet etc. I'd have to make this a hobby. On another note, I wonder how the buyer of the encrusted silver denarius I sold him we talked about is doing with his work? Hope he shows the results to the forum as he wrote for feedback, "Fun challenging cleaning. Already half done!"
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Pillar of the Community
United States
789 Posts |
Im a fan of olive oil and patience, altough in this case I might try electrolysis.
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Moderator
United States
23731 Posts |
I'm also a fan of olive oil but I find for this type of deposit it doesn't work very well.
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Pillar of the Community
United States
1120 Posts |
Olive oil is probably the best option, however, patience has to part of the solution. That is something I'm still working on  |
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Pillar of the Community
United Kingdom
4208 Posts |
I'm not certain olive oil would ever successfully remove that - I would leave the coin as is. In the future, I am sure there will be methods to remove this sort of encrustation that doesn't touch the coin and I'd leave it to the collector of the future to deal with.
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Replies: 10 / Views: 1,540 |
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Posted 07/21/2019 10:37 pm
