Found the cross-reference.. It's a M70A, blind magazine with cheaper wood.. Made '72-'78.. I'm thinking it does NOT have the anti-bind slot.. But I'd have to see it to make sure..
I've got a Blue Book that's a couple years old now - and it shows 100% at $450.. But again that's for the Winchester nameplate.. The Ted Williams version was for Sears and will command a much less price..
Just passing info, FWIW.