That one cm might make a difference to a potential buyer - If I were thinking about spending $750 for it, I would want to know the exact frame size, and not find out later it was different than listed.
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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"