I'm not certain when they lost the eye stabbing brake levers, but the pedals look to have no reflectors. That would denote pre 73 at the least, so a nice find in that condition. Polish it up, clean the chrome, polish the aluminum, and it will look like new. Just watch it around the decals, as they were on top of the paint back then. If they're dry enough, you can polish the white off, leaving the clear part of the decals intact.,,,,BD

I think the serial numbers jumped to the lower head tube, after 1965. So if it's not on the dropout, check the head tube. With the old flush fit metal reflector holder on the back, I would guess late fifties to early 60's?