Watch List notes:

Panama, brass diamond-shaped metal check, I.C.C. Engineering & Construction Department, early-1900s. Rulau-CZ-A74; Plowman-CZ-1.1. 9.82 grams. Metal check issued to a worker on the Panama Canal sometime between 1904 and 1914. Plowman notes that "these may have been early employee ID checks, before the general issuing of metal checks in August, 1905. They may have also been tool checks, or even used to track other equipment." Worn, full details visible, some gilding in recessed letters, spots of verdigris, possible wax writing on reverse.

Estimate: $100-150