Showing posts with label Patina. Show all posts
Showing posts with label Patina. Show all posts

Tuesday, May 5, 2009

CLEANING COINS


Never clean a coin. It lowers the value, because collectors want coins with the patina unchanged.

Tuesday, February 10, 2009

POLISHING COPPER

Never polish Arts and Crafts copper or pewter. Even if the patina is damaged, it's better than a cleaned piece. Original finish is important. The green or brown patina on a piece of Heinz Art and some others was added at the factory.