Generally, 25 years and older equals vintage. Classic is harder to categorize. I think a high quality level needs to be there to be classic. And it would not have to be 25 years old to be classic. I think a mid 90's Paramount can be considered classic. As well as most Waterford bikes.
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Carbon: Fuji SL2.1 Di2.......Aluminum: Cannondale Synapse 105........Steel: Schwinn Circuit 853
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