The watch was my grandfathers and has his initials on the back of the case. It appears to be a gold filled case from Keystone Watch Case SN: 8515744, and then another number inscribed below that (72533). The watch, from my research appears to be a Model 1894, Grade 225, Size 12S, 17 Jewel screw set, 3/4 plate, and it works. The watch SN: 21494346 made by Waltham U.S.A. on face. The face has a few cracks on the lower right.

The watch is about an inch and three quarters diameter. The knife is 2 inches and a quarter. The chain is approx. 17 inches.