16s / 16 size (about 2 not including stem). This watch would make a great gift for someone who appreciates fine American pocket watches. The item "1910 Waltham Crescent St RAILROAD Grade 21 Jewel Pocket Watch Large 16s Antique" is in sale since Friday, June 19, 2020.This item is in the category "Jewelry & Watches\Watches, Parts & Accessories\Watches\Pocket Watches". The seller is "chronified_international" and is located in Buffalo, New York. This item can be shipped worldwide.