Hello! Inherited a Waltham that has been in the family for many many years. The only markings I can see on the dial are "Waltham" and inside the back case on the foldout piece the numbers "6155565"
It still keeps time when wound. On the dial side to the left of the roman numeral IX it looks like perhaps there was another cover but it's missing You can see in the pictures that there is what looks like a hinge.
Lastly I have no idea how to open the back. It doesn't appear the back piece "unscrews" and everything looks pretty well sealed shut. I know the serial number is located near the inner workings but as stated I have NO CLUE how to take the backing off.
I really want to know if it's worth the cost/time to have this piece professionally restored. I have no idea how much it would cost to repair.
Any information you can provide I would be super appreciative. I am very interested in the history of this watch.
Here is a link to a few pictures I took: Photo Album - Imgur