That's what my LBS claims, at least over the phone. The 27x1 is on a Motobecane, vintage about 1980. When I called my LBS, the guy I talked to said "I think that's just a standard 700C road tire". I've looked over some Sheldon Brown info on the internet, and I can't imagine that a 700C will fit my rim. I said I'd bring both the wheel and old (dry rotted) tire in for comparison. Is it even worth a trip over there?