I did not know they made anything but pre 64!! Bought my first one 50 years ago and headed to Alaska. Then a 270 FW, and a 300 H&H. Dad had several we divided up and I got standard 270 and a 257 Roberts. So fortunate. Thats all I know-pre 64 is tops.The Model 70 has always been "the" gun for me.
I have an 30-06 featherweight.
I had a pre-64 .300 that I sold years ago, and every time I see one sell I cry a little. I thought I got an insane price for mine, but they've tripled and quadrupled since then.
Grandpa had one in a 25-06, .243, 30-06 and few other calibers too probably. He was constantly buying and selling guns.