A little back-story is in order here I guess.
I’ve been photographing and cataloging the tackle that belonged to Wm. Shakespeare Jr. so that when I pass on my survivors will know what is what.
The B9 Marhoff was apparently an experimental reel with a change in the gear bridging (B?) as seen below:

I’m starting to see a pattern now with his other reels. His Triumph HC has a small K stamped on the foot, his Superior Kalamazoo HD has an O, and his Tournament HE has a G.
It looks like he may have done some of his own field testing. I haven’t found any marks like those on his fly reels, even though one automatic is obviously experimental.
Samples were probably sent to fishing pros for field testing, and if O was the highest letter that would be 15 reels. I know from documentation that experimental Wonderods were sent to pros around the country.
Does anyone else have an old Shakespeare with letters stamped on the foot, mostly in the center of the rivet? I still believe the R stamp is for REPAIR since I’ve seen it several times on the level-wind modified reels.