That rifle is correct. Late pre-war Type 1 M70 receivers in the 57,000 to 59,000 S/N range were fitted with Type 11 Transition bolts with the Type 11 rabbits foot safety. Examples of this can be found in the Whitaker book where all 5 of the RCS Guns have pre-war receivers but two of the guns were fitted with transition bolts.
My experience is that most "transition" M70s are of the type that you described... cloverleaf tang with clamshell safety lever. I think the less common ones are the late ones with the clover leaf tangs and Type III safety... I have a friend with a 300 H&H like that w/ SN low~ 90k. IIRC, there are even a few w/ the post-war tangs and Type II safety (need to look at my Rule reference again!) but I have not personally seen one.
What was throwing me was the recessed and roll marked rear bridge. It’s a type I action. In theory the transitions are supposed to be smooth; with no clip slot; aka type II. But pocano had the answer!
Yep, you are absolutely correct Pocono. The bolt is the non-squared transition bolt. And I got a chance to look at it and the numbers match, so I’m convinced it is as it left the factory.
The one of my friend's, in 300 H&H, was type II action (untapped rear bridge), type III safety. It was an old family gun. I insinuated, with very little effort or hope, that I would give him a fair price for it if he ever wanted to sell... he never even wavered!!! He does not have much knowledge of old M70s but has heard me talk enough on such matters that he figured I knew what I was talking about!!! All I told him was to please not alter it; maybe shoot it; and keep it for posterity... has 3 daughters that like to shoot/hunt with him.