All Waltham pocket watches have a serial number stamped on the movement (the works) inside the watch. The serial number can be checked against an online Waltham pocket watch list, which will give the approximate year of manufacture. Waltham pocket watch serial numbers can be accessed by opening the case back.

How do you date an antique watch?

The best way to identify the date of manufacture of a watch is to locate the serial number on the watchs movement. The movement is the spring-loaded mechanism the runs and regulates the timepiece. Comparing the number to the manufacturers listings can date the manufacture to the approximate year.

What are the sizes of pocket watches?

Pocket watch sizes are based on 30ths of an inch. The formula is simple: Diameter of movement = ((Size + 35) / 30) inches. For millimeters, multiply inches by 25.4 .SizemillimetersInches836.41 mm43/30 = 1.4331038.10 mm45/30 = 1.51239.79 mm47/30 = 1.5671441.49 mm49/30 = 1.63313 more rows

What size is smaller 0 or 00?

Size 00 can be anywhere from 0.5 to 2 inches (1 to 5 cm) smaller than size 0. Size zero often refers to thin individuals (especially women and adolescent girls), or trends associated with them.