Looking for a pair of G&H 7/8" QD topmount rings, they made some in the 1940s and 1950s, maygbe 1960s, to hold Lyman Alaskans on top of their custom rifles. I have a Westley Richards single shot with a quarter rib set up for them.
The rings I am looking for are one piece units, lever lock, fit a 5/8" dovetail base. Look a little like Talley QD mounts. Check griffinhowe.com to see what their present topmounts look like, these are lower and go on a narrower dovetail.