Silvana dating pocket watch
If there is no lip, carefully wedge the blade into the seam and lift. Carefully examine the case back of a Waltham pocket watch. Press down on the crown and a tiny hatch will release the cover. Digits in the serial number will range from two to eight depending on the year of production.
These watches are typical of the "Deco" style of the teens and 20's.
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.
Unlike other watchmakers, Waltham went the extra step by usually identifying the model of the watch on the movement as well.
This information can be used to find the year that the watch was made.These numbers are stamped on the back (outside) of the case. The code was usually stamped on the back of the watch case.