I am slowly adding serial number tables to this site. With the exception of BULOVA, the numbers on the inside and outside of the CASE ITSELF are ONLY for identification purposes - they mean nothing.
Sometimes it is easy to answer, and sometimes it is impossible.
Some companies (as with the Gruen Watch Company), even lost rocords to fire or other natural disaster. I am sure they had no idea that their timepieces would someday be collected.
There are several ways to get an idea of when your watch was made.
The full case serial number is stamped into the back, cuvette (inner back cover - if existing) and lid (front cover of a hunting case).
Frequently, the last four or five digits, or occasionally the full serial number, is stamped on the back rim of the case center ring.