Nice bike. I'd use some clear nail polish over the missing paint. By the way, that's an SR apex crank with obsolete 86 bcd chainrings. It's a nice crank and chain rings are still available via Spa cycles in the UK. It can only go down to 28 teeth though.

If it were my touring bike, I'd consider swapping out that crank for a 110/74 bcd crank. But then I might just ride the heck out of this crank before installing a new one.