dcooper Collection / Serial #602010 U.S. Watch Co. (Waltham, Mass) Grade Unknown Serial #602010 Movement Image Manufacturer U.S. Watch Co. (Waltham, Mass) Grade Unknown Serial Number 602010 Size 18s Model 1892 Jewel Count 15 Setting Lever Finish Two-Tone Movement Markings C. D. Pringle Guelph, Ont