the Schwinn 'inch-pinch' tanker bike with a springer fork that I had circa 1970 was just about 60 lbs with balloon white sidewalls and fenders. after a few crashes on the fire roads of Mt Tam, I stripped off the mangled tank with its silly buzzer-horn, and the fenders, and the bad springer forks were exchanged for a blade fork (that I think came from a Higgins or something), and then it was probably 50 lbs.
what I would have given for a decent front brake on that bike, hahahahaah.