I've been going scan crazy after going through old photos last night. I found one of my old Jazzmaster with my band mate playing it. I never had any idea what year it was as I never concerned myself with details like that until recently.
After examining the pic (below) and doing a little research it would appear that this one would have been a post 67 (bar inlays)? The headstock decal might suggest of 70's? Any other clues as to the year of this guitar?
I'm bummed that I didn't hang on to it but even then it wasn't my main guitar. The bridge had bad rattles and I would put paper underneath the bridge screws plus the strings would pop out of the nut on occasion not to mention its low output noisey pups. The thought of taking it in for a set up never occured to me then LOL! That piece of junk is probably worth over a grand now huh?