To all you experts on this matter, a question.
First, I have two WWII 1928A1 guns. I shoot both quite a bit and really prefer the vertical grip over the horizontal for better control.
The Savage-made gun that I have owned for a couple years now came with a very nice vertical front grip marked inside the rail slot with a "B". That grip appears a couple degrees more "backswept" than the pics of the originals I've seen but the angle and the feel are great. it's quite "elegant".
I know that one was made by Dan Block as I've been to his shop and seen his work. I know he made these by hand and this one I really like.
The other gun I have owned since 1999 is an early AOC gun (51xxx) and I bought it from a friend. He picked up a vertical grip for it years before I bought it from him and I don't know the history but that grip. It does appear to be the same angle, thickness and profile of the originals but is marked on the top just forward of the rail cut with the letters "SILE".
Always guessed it is not an original but if anyone can tell me a bit more about it, who made it, etc. I'd appreciate the history.
Three pics are here: https://imgur.com/a/MMbkOiE