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.
Our collection database is a work in progress. We may update this record based on further research and review. Learn more about our approach to sharing our collection online.