Overall: 7 1/2 x 14 1/2 in. ( 19 x 36.8 cm )
inscriptions: Bottom corner: Gibbs ; BMT 67, Standard AB, LOV, 39, Worlds Fair, Rio, R15, R33, R32, R40, R46
Inscribed at lower right in graphite: "R15"
Gift of George Gershinowitz
Due to ongoing research, information about this object is subject to change.