76040 L7 is whats stamped on the back i know very little about this watch and would like to know more thanks
It will say so on the movement itself. Take this movement, for instance:
From the printing on the movement bridges, you can tell the maker, the model number (10AN), where it was made (Switzerland), the number of jewels (15), and the year it was made (1930 - that little 'omega' looking thing on the far right next to the ratchet wheel).
Yours will probably be marked with a two-digit date code like 'L7' - which corresponds to 1957.
In reply to Is this watch worth by koch1987
Not worth a great deal in its current condition as far as the open market goes. If it has sentimental value then its probably worth getting the case restored or getting a better one that matches the exact design.
The case condition is is what really kills it value.