1875 Woods Old Masonic Hall / Masonic Temple Mule. Marvin-303. Copper. Plain Edge. 31.4 mm. Gem Proof.This metallic composition of Marvin-303 is not listed in the Bowers reference on Sage medals.From the Q. David Bowers Collection. Acquired from Bowers and Merena Galleries, 2002. Earlier ex Johnson Collection. Collector tag with attribution and provenance notes included.