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Carus Raised Encrustation Question:

 
 
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 Posted 07/21/2019  8:38 pm Show Profile   Check louisvillekyshop's eBay Listings Bookmark this topic Add louisvillekyshop to your friends list Get a Link to this Message
Below is a Carus I was working with today and if it was my coin to keep I'd not remove the encrustation on the reverse.
But being so raised off the surface I suspect you might be tempted to give it a try. Would you leave it or try to clean it up? It is not just dirt, it is incrustation so there is some chemistry to the surface I imagine where this is entrenched.






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 Posted 07/21/2019  9:49 pm  Show Profile   Check FVRIVS RVFVS's eBay Listings Bookmark this reply Add FVRIVS RVFVS to your friends list Get a Link to this Reply
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 !
IN GOD WE TRVST ....... all others pay cash !

COGITO ERGO SPVD
I think ...... therefore I yam
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 Posted 07/21/2019  10:37 pm  Show Profile   Check echizento's eBay Listings Bookmark this reply Add echizento to your friends list Get a Link to this Reply
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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 Posted 07/22/2019  04:51 am  Show Profile   Bookmark this reply Add John1 to your friends list Get a Link to this Reply
Has anyone ever tried CLR? ( calcium lime rust) For reference only https://www.ebay.com/itm/CLR-G-CL-1...AOSwWuldFNOq
John1
( I'm no pro, it's just my humble opinion )
Searched 5+ Million Cents Since 1971
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 Posted 07/22/2019  11:08 am  Show Profile   Check Paul Bulgerin's eBay Listings Bookmark this reply Add Paul Bulgerin to your friends list Get a Link to this Reply
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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 Posted 07/22/2019  12:18 pm  Show Profile   Bookmark this reply Add travelcoin to your friends list Get a Link to this Reply
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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 Posted 07/22/2019  12:43 pm  Show Profile   Check louisvillekyshop's eBay Listings Bookmark this reply Add louisvillekyshop to your friends list Get a Link to this Reply
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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 Posted 07/22/2019  12:58 pm  Show Profile   Bookmark this reply Add joecoin to your friends list Get a Link to this Reply
Im a fan of olive oil and patience, altough in this case I might try electrolysis.
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 Posted 07/22/2019  4:33 pm  Show Profile   Check echizento's eBay Listings Bookmark this reply Add echizento to your friends list Get a Link to this Reply
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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 Posted 07/23/2019  1:39 pm  Show Profile   Bookmark this reply Add travelcoin to your friends list Get a Link to this Reply
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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 Posted 07/23/2019  5:04 pm  Show Profile   Bookmark this reply Add Ben to your friends list Get a Link to this Reply
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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