thanks. There is a small wrinkle on the underside of the top tube, and a larger wrinkle on the underside of the down tube. I think it's toast unless I opt for tube replacement, which seems unlikely right now.
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1989 Schwinn Paramount OS
1980 Mclean/Silk Hope Sport Touring
1983 Bianchi pista
1976 Fuji Feather track
1979 raleigh track
"I've consulted my sources and I'm pretty sure your derailleur does not exist"