I updated the data base and added 7 jewel movement for the 10BC. Here's a picture of a 1947 model. 
1945 - 15 Jewels
i have a 17 jewels hopeing to see a picture if you know where i might find one
1946 - 17 Jewels
In reply to 1946 - 17 Jewels by Andersok
thank you looks like the one i have instead of the squar box mine has the# 46
7j 10 BC with a 1948 date code found in a Walton model.
In reply to 7j 10 BC with a 1948 date by rtwatches
I have just purchased a1948 ,7jewel 10BC is it agood movement compared to the 15 and17 jewels tank watch models,I'm curious??
Hi Demetrius. The 7 jewel 10BC is a good movement. It will just require servicing more often than the higher jewel movements because there are more pivot points with metal rubbing against metal which creates more friction than metal rubbing against a jewel.