This may have been what I needed? I've never heard of Kruzell mounts. This lady has a bunch of other old gunshop inventory, maybe I will ask if she has any more, and to measure the holes. If I could find a Weaver side mount blank, I would go that route. I have a couple sets of Weaver Pivot mounts for M70's, so if I don't come up with a side mount before fall, I will just use them, and the bbl. sight.
Thanks everyone for their help.

http://www.ebay.com/itm/Kruzell-Detachable-Scope-Mount-Model-SB-1-Scope-Side-Location-with-box-/111724441199?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2047675.l2557&nma=true&si=SmqWh7jhdeVEyY7Irig4FvgQdOs%253D&orig_cvip=true&rt=nc