FORVM`s Classical Numismatics Discussion Board

Numismatic and History Discussion Forums => Coin Photography, Conservation and Storage => Topic started by: stef n on November 30, 2008, 05:51:55 am

Title: HOW CAN I CLEAN OR FIX THIS SILVER TETRADRACHM ???
Post by: stef n on November 30, 2008, 05:51:55 am
PTOLEMY xii SILVER  corrosion ? disease? or?
Title: Re: HOW CAN I CLEAN OR FIX THIS SILVER TETRADRACHM ???
Post by: areich on November 30, 2008, 07:16:48 am
There's nothing to clean or fix there, whether it looks this way because of natural processes or harsh cleaning,
there's nothing short of painting it that will improve this coin.

Andreas
Title: Re: HOW CAN I CLEAN OR FIX THIS SILVER TETRADRACHM ???
Post by: stef n on November 30, 2008, 07:30:36 am
that brown red is that corrosion? will it be worse in a few years??
Title: Re: HOW CAN I CLEAN OR FIX THIS SILVER TETRADRACHM ???
Post by: Akropolis on November 30, 2008, 08:53:38 am
that brown red is that corrosion? will it be worse in a few years??

It appears to be a hard, stable deposit. Further, silver coins doi not get "bronze disease."
PeteB
Title: Re: HOW CAN I CLEAN OR FIX THIS SILVER TETRADRACHM ???
Post by: stef n on November 30, 2008, 09:00:22 am
thanks...to both
Title: Re: HOW CAN I CLEAN OR FIX THIS SILVER TETRADRACHM ???
Post by: bruce61813 on December 01, 2008, 11:42:52 am
It is possible that the "red brown" is a tiny bit of iron. OPart of you coin hace been damaged by some type of corrosion, so it may have been against some iron and that is a bit that is still bonded to the surface of the silver. If that is the case, there is no real reason to worry, the silver will be fine.

Bruce