Dating to the 1960s may I offer this disc charm featuring the unisphere for the New York Worlds fair of 1964-65. Manufactured by Wells Sterling.
Condition: Very nice with a matte finish to the front. A light polish would bring up a shine - it's a little tarnished right now.
Metal Content: Sterling Silver
Hallmarks: Wells Sterling
Size: About 1" high/wide.
Weight: 6.7 grams - yes, a nice bit of weight for a disc charm.
Final Comments: Ready for a charm bracelet.