1885 San Francisco Mechanics Institute bronze medal. Hallmarked “A. Demarest. SC., New York” and on the edge of the coin is inscribed “Baker & Hamilton best straw burning engine” Dimensions: 3” Diameter Processing and shipping within the Continental US $30. All FedEx packages are sent with Direct Signature Required and insured at full replacement value for a fee of 1.5% of the purchase price, unless buyer accepts complete liability in writing. Discounts given on combined lot shipping.