I agree with Coop that it's not a
Cud. I can still make out the complete form of the L, which would be gone if the die had broken. Looks more like a folded over
Rim Fin than anything else.
A side shot, showing the edge near the L, might help clarify things.
I think it's an RPM as well. Looks most like VV's RPM 007. There is flattening of the original S, no doubt, but I still see the second punch east of the top and middle of the S.
Nice find!