21 Jewel example with possible date of 1947 based on first digit of case serial number. I'm not going to edit "End Year" yet, as this watch/movement is still being ID'ed. Click on graphic for full watch record.
Double Date stamped 1940/41 17Jewel Going conservative with end date of 1940- If production ceased in 1940, and the watch was finished off in 1941. Asterisk looks to be hand stamped.