Joined: Apr 2007
Posts: 12,569
Likes: 2,740
From: Thunder Bay, Ontario, Canada - burrrrr!
Bikes: 1958 Rabeneick 120D, 1968 Legnano Gran Premio, 196? Torpado Professional, 2000 Marinoni Piuma
How many times does this question crop up? More than enough, that's for sure. And we never find common ground to agree on, let alone answer the question. So...
Why not follow the example of the vintage car industry and go with 25 years old and older? I guess it really doesn't matter, when you stop to think about it, unless, of course, you are attempting to answer the OP's question. For my money, vintage is always going to be defined by the age of the bicycle and that age is 25 years old or older.
Course, that is just me and my opinion.
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"98% of the bikes I buy are projects".