Vintage 200th Anniversary of Nassau Hall Stamp Sterling Silver Pendant Necklace

A vintage postage stamp from the USA, commemorating the 200th anniversary of Nassau Hall, one of the buildings of Princeton University, behind glass in a sterling silver pendant. The pendant is on a brown cord necklace.

The stamp is a 3 cent, from 1956, and depicting Nassau Hall and inscribed "200th Anniversary of Nassau Hall 1756 - 1956 3¢ United States Postage 3¢"

Pendant - 1 5/8 x 1 3/8" - 9.3g - Marked "925"

Necklace - 17 1/2 inches long, with 1 1/2 inches extension chain