AKW,
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.
Transitions are my favorite collector variation.
