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1913 Print Spillway Dam Regulation Gates Piers Panama Canal Water Isthmus XGOC4 XGMB4 This is an original 1922This is an original 1913 black and white halftone print of the Spillway Dam for the Panama Canal. The regulation gates are in position between the Piers. This is how the dam looked on June 1, 1913. CONDITION This 98+ year old Item is rated Very Fine +++. No creases. No natural defects. No surface rub. No tears. No water damage. Product Type: Original Halftone Print; Black White Grade: Very Fine +++ Dimensions: Approximately 4 x 3 inches; 10 x 8 cm