Beautiful early Prospex Alpinist! Where on earth did you find such a pristine example? Well, that's really none of my business, but I'd say you hit the jackpot!
My collection includes the SARB017, its new cousin the SPB089, and one of the three models that came in between, the SARB059, with its fixed compass bezel and International Ground/Air Emergency Signals printed on an inner chapter ring.

(Here's a shout out to WatchUSeek member Dec1968 for his excellent capture of the '059's legendary "Emerald Burst!" Unfortunately I don't have such a good one of my own to offer.)
Your new piece with the Cyclops date—one of the so-called "Red" Alpinists—is one I've been searching for myself. I guess you either love or hate that addition. I, for one, was hoping that the next generation of Alpinists might have such an option. For now, though, I'm happy with the addition of a dressier piece.

Enjoy your fabulous new find in good health! I'm envious! FH