Vintage solid gold COIN 8K miniature framed LIBERTY special edition

Vintage solid gold COIN 8K miniature in framed LIBERTY special edition!! Diameter of the coin: 0.3 inch / 1.1 cm. Measures of the frame: 2.3 x 2.3 inches. The world's smallest gold coin. 8k gold could tarnish from sulfur and ammonia in the atmosphere.

Copper, in particular, likes to react with oxygen (moisture) and this can lead to discoloration or tarnishing greenish to brownish. The coin is over 40 years old.

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