Help with identifying Freddie Grubb Frame

[PedalPedantic]

I have just done a bit of trawling and found a Freddie Grubb which was dated to 1963 . If your frame is using the same numbering system then that would make it pre 63.

I have a '63, and it is # 16324. It also has a Claud Butler number, 4750, which is consistent with the year. Apparently, the frame was directed to be a C.B. but ended up a Grubb.