I was surprised because it looked shitty .34mm is spot on so you know you're stuff.collectable wise I would never had guessed.it reminds me of my old man when he wore safari jackets lol eehhwhy were you surprised it was a gen?? Of course it was a gen. no doubt about it.
I have 6 vintage gens, including a Geneve like this one. Your watch is most likely 34mm. The Geneve line, unfortunately is there bottom tier line of watches. Still very collectable nonetheless. It is definitely worth more than 100 bucks. You could probably get double if not more than that for it.
Get the serial number and from that, you can date it pretty accurately.