The Waltham Watch Company, also known as the American Waltham Watch Co.
and the American Watch Co., produced about 40 million watches, clocks, speedometers, compasses, time fuses, and other precision instruments between 18.
The dial and crystal go right to the edge and the lugs are smaller.
Note the thick hands, engraved patterns and bold design of all of these watches.
These watches are typical of the "Deco" style of the teens and 20's.
Some of the pages will be able to provide additional information.
Once you have armed your self with the information about your watch, you can go to the Information pages to determine the age of the watch.
Both companies went to a different serial number system and the date of manufacture is not determinable by these letter & number serials.
: In the 1950's Bulova incorporated a symbol system to date the watches they manufactured.
By the late 1930's mens watches were more masculine. This was made possible by the advent of square movements.
Until then all movements were round, limiting the designs.
The Elgin and Hamilton were dated by serial number, while the Gruen was dated by an inscription on the back. In the 1930's there was a style change from highly engraved cases to smoother cleaner lines.