I'm no expert (though I've done one or two restorations), but for its time and place, that machine certainly looks to be worthy of some care and attention and likely to reward its new owner. Maybe not financially (restorations never do, as a rule), but in terms of how it would feel to get something that close to original back on the road...
I've got a buddy who's a scooter-phile, I'm gonna have to send him this link!