The objective lenses of the large instrument are 50 mm diameter. The barrels are covered with black leather. The eye end of the left prism housing is marked “7 x 50” and the right one is marked “BINOCULAR, M17 / STOCK 7578344.” The center post is marked “No. 54204.” There is a brown leather case. These were probably made for the U.S. Military, for use during World War II.
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