Did Winchester make any pre 64 M70's left handed? I'm curious because I've never seen one for sale.

They did not make LH rifles in the original pre-64 models. Only in recent years were these brought out...with claw extractors as in the original pre-64s.
I have one in 7 Rem. mag new/boxed for sale @ 900.
Alex

If you mean the M-70 Classics, yes, they built some beginning in the late 1990s. I have a few of them.

George