This is my wifes GP purchased new in 1973, I think. This picture was taken in 2008. In the pic, it still has one of the original tires. It sports new tires today and for comfort, tektro brakes with a more ergo bar.
I have some 27" rims to build for improved braking, may use some extra Campagnolo HF or Mavic 501 hubs and a Suntour V Luxe RD with some nice shifters. Should make a big difference in the ride.