Welp... don't ask me to show you a picture of the movement because the only way to get it out is to take off the front crystal and remove the stem. A. I'm nortorious for cracking/breaking crystals when I take them off the front. B. I've never been able to detatch on of those two part stems from the front. Ever... ... ever. Haha... so... the 23 Jewel Model number is copied from other examples of this watch Everything else is original (dial, hands, case) that I'm sure the movement is fine. According to the ad we have it look as though we've got the President "F". Of those 1960 President this is my second favorite only behind the triangle watch. This on has the unusual asymentrical back case.
The A-F ad is using the letters as references to the watches, not variants.
The OW linke snippet is not an advert, it is a mat service. The full one is here below, it shows variantsfor five of the six known Presidents in the ad above, several variants have yet to be seen.
http://www.watchophilia.com/vintage-advertisements/a1960-1969/a1962-mat-service/
In reply to By the way, that's one of the by bobbee