I know I’m looking for a needle in a haystack, although I’ve found a few needles with the help of members here over the years. Does anyone have a Lyman 66 to fit a Marlin39A or 1897 Cowboy? I finally found an 1897 Cowboy and want to put a receiver sight on it. Might also consider a Williams foolproof with the target knobs. Can pay promptly if you’ve got one you can part with.