Kodak RS Pan 6138: this film is weird

[MCB18]

I got a 60’ roll of this in 70mm that expired in 1964(!) when someone in TN liquidated a bunch of film. I have found zero information about this film other than one brief mention in a Kodak product catalog from the 1960’s. Apparently it was a 640 speed sheet film with extra red sensitivity. Why is it in a 70mm roll? I don’t know. It’s thick film, my slitter didn’t like it, it barely fit on a 120 spool, it made my camera’s motor drive scream… and yet somehow, I actually got results from it?! I’ll be honest I was expecting a completely fogged roll, but no, it actually has images. ISO 25 and 12 look pretty good I think! Very surprised just how well this film turned out. I have yet to scan them, but they look usable! Maybe even printable!