Brass(?) corrosion

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      We have three items in our collection – two police badges and a leather pouch – that have evidence of oxidation, possibly indicative of bronze disease. The green discoloration is slightly powdery, and tiny bits will dislodge with a cotton Q-tip, but we fear that corrosion may have already set in. What is the best way to stabilize these artifacts and stop the spread of corrosion? The badge with the worst problem appears to be brass-plated? Thanks, Laura Furman, Curator of Collections, Midway Village Museum.

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