U.S. Military Model 1842 Combination Tool. Marked "US". Dark dull blue//black finish Steel, 3 5/8” long x 2 3/8” (with blade opened to 90 degrees. Marked “US” un-evenly at the wrench. The finish is about 50-60% thin dull blue/black remaining. This Model 1842 Combination Tool is scarce. Price: $80.00 (ref. B-9863).