[ no publication place ]: Am. Press Assn [ no date noted ]. A printing plate used to print a map inset. 4 3/8 x 7 5/8 inches. Made of a lead/zinc (?) combination. The back of the plate has three strips of material that we assume were used to anchor the plate to the press. A portion of one retaining strip has broken off. One tiny gouge to the front of the plate. Otherwise, overall light soiling. With some careful cleaning we'd guess this would print pretty well. Very Good. 
The map shows canals, roads, and railroads. We see the North Sea and Westende at the top, Ypres in the middle, and Lille at the bottom. Roulers on the left, and Nieuport upper right. Hard to read it backwards! A fun printing artifact.