Great find! Had bought 3 Leatherman PST a few years ago off eBay. One that I kept, a TSA seizure from Texas, has a sabre blade. IMHO they are the best blades and great for a medical kit.
First PST was from a Marlboro catalog. Parents smoked 'em, I got a multitool.

A few years later it broke, sent it in for repairs. Got a PST II in return - the one with the hook groove in the diamond file.