The Gotham Silver on Copper 16R mark is found on silverplated items produced by the Gotham Silver Company, an American firm known for manufacturing silverplate hollowware in the 20th century. “Silver on Copper” indicates that the item is made with a copper base coated in a layer of silver, a common method for achieving the look of sterling at a more accessible price. The number “16R” is a model or catalog reference, helping to identify the specific design or size of the piece. This mark is important for distinguishing the item’s construction and confirming its maker and origin.