Thank you for the clarification.

I have a friend with a collection that extends back to a replica of a pre-1800s bike, and with a fair number of high wheelers. All are ride-able and ridden.

My World Tourist has the original frame, forks, front freewheel, front derailleur and front shifter. Everything else has been changed over the years. The stem is from an Austrian Free Spirit ten speed, ca. 1973; the pedals were purchased in England in 1974. The wheels are 27" Suze/Araya 36/40H sealed bearing freewheel (mid '80's) that I acquired last fall. Everything else is recent.

The Sierra Sport is also getting new components. It will have ISO 590 Sun CR18 rims. I am too heavy for the 571 (650c) stuff available, 559 is too small to match the brakes, and 622 (700c) is too large. The 584 (650b) is expensive, and too low a tire pressure for me.

The Trek T50 Tandem has a wonderfully rigid Cro-Mo frame, 1 1/8" threadless headset. It is mostly original, except the handle bars, levers and the middle and large chainrings. Even has the original rims - lot of brake rash on the rear, none on the front. I suspect very few miles, base on the rims, and lack of wear on the sprockets.