Hecktor Peabody
Boris Badinov
What are the indications that the stock has been refinished?
The color of the finish. And the missing stock serial number. Check out this link to see what the original color of the finish looked like.
http://chinesesks.weebly.com/195960-letter-guns.html
The 'F' series is one of 7 letter gun prefixes (B,C,D,E,F,H,R) that were stamped with a large style serial font on the stocks.