Vintage Antique American Chemical Society 10K Gold Lapel Pin Enamel ACS 496F

Weight (without clasp): 1.3 grams

Hallmarked "10K" and signed by maker "CTO".

Enamel in good shape, minimal (probably manufactured) bend/lean in screw, very good condition.  The tiny piece of metals at end of screw has probably also been there since manufacturing, there is not any stripping of the screw.

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