Is yours pictured on the CR link you provided? I'm not sure if mine is a full tourer ( I suspect not), or a "perfect pleasure" model (likely?). Mine was once on the CR link, but Dale pulled it for some reason...
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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"