Engraved mug, could be sterling, maybe silver coated pewter due to beautiful finish. I tried a magnet to it and it would not stick. The finish is beautiful, no pitting, dings or scratches.
It is engraved:
W. S. Corcoran, then some asian characters, X-Mas 1966
Very nice mug for your vintage bar, measures 5 in tall x 3 in wide
Materials: Metal.
