16s / 16 size (about 2 not including stem). This watch would make a great gift for someone who appreciates fine American pocket watches. Message me with any questions/offers. The item "1938 Hamilton 992E Elinvar RAILROAD Mechanical Pocket Watch 21 Jewels 16s USA" is in sale since Tuesday, May 09, 2017. This item is in the category "Jewelry & Watches\Watches, Parts & Accessories\Pocket Watches\Antique".The seller is "chronified_international" and is located in Buffalo, New York. This item can be shipped worldwide.