Originally Posted by
Mvcrash
There are no markings on the rims or tires which indicate size. The rim is Mavic and has a stamp “Mavic Sport” and the tire has “Falcon.”
Mavic Sport was a tubular rim. There are a few NOS listings for a "24×1" version 520mm / 600A. Mavic also made "26×1" 571mm / 650C tubular rims, and I've seen mention of 584mm / 650B too. 520 571 622 is a nice even progression of sizes.