Dark chocolate patina bronze medal and Acetone
adamlaneus
Posts: 6,969 ✭✭✭
I know that Acetone is generally a good solvent for organic contamination that you don't want on the surface of metal.
I have a recently acquired Wiener Cathedral Medal that appears to have a wonderful original patina, but I also see some distracting spittle spots as well as what appears to be a little bit of a fingerprint in a field. I know better than to touch these medals; hands off is my approach with these. But the spittle spot is distracting.
I suppose the answer is "it will do no harm"...but is Acetone an acceptable solvent for a dark chocolate patina medal? It is an odd surface, created by baking the medal in a specially formulated powder. I believe it creates a very specific 'mineralized' or 'corroded' surface. I'm pretty sure an organic solvent will not affect this surface. But this is an unusual medal, not typical of the rest of the coins I have that I know Acetone will not harm.
If one does not know for certain, is the proper procedure to first dab some on the edge of the medal to determine if it changes the patina at all?
It's a "Cathedral De Reims". One of the more basic and straightforward designs in the series, in my opinion.
Wonderful detail and relief on these!
I have a recently acquired Wiener Cathedral Medal that appears to have a wonderful original patina, but I also see some distracting spittle spots as well as what appears to be a little bit of a fingerprint in a field. I know better than to touch these medals; hands off is my approach with these. But the spittle spot is distracting.
I suppose the answer is "it will do no harm"...but is Acetone an acceptable solvent for a dark chocolate patina medal? It is an odd surface, created by baking the medal in a specially formulated powder. I believe it creates a very specific 'mineralized' or 'corroded' surface. I'm pretty sure an organic solvent will not affect this surface. But this is an unusual medal, not typical of the rest of the coins I have that I know Acetone will not harm.
If one does not know for certain, is the proper procedure to first dab some on the edge of the medal to determine if it changes the patina at all?
It's a "Cathedral De Reims". One of the more basic and straightforward designs in the series, in my opinion.
Wonderful detail and relief on these!
0
Comments
<< <i>Can't hurt to try. >>
Disagree. Any cleaning process carries some risk.
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