Does anyone recognize this scope base and rings?

[M1Garandy]

I'm trying to help a friend ID this setup for the owner.

The base is brass or bronze and marked Springfield. The rings are steel and are 7/8".

Any leads on the manufacturer, vintage and possibly value would be most appreciated.

Thanks

[Gary L. Bush]

M1Garandy
(1) It may be an ADJUSTO-MOUNT By Leupold Refer to OLD RIFLE SCOPES by NICK STROEBEL Page330
(2) 1950s
(3) The question of value would have to determined at auction.

Gary Bush

[chuckindenver]

Gary beat me to it lol