Pretty much anything older than 25 years, or a bicycle that has a unique look, like the GT Dyno Roadsters.

In our experience, if you take the average person-on-the-street and show them a bunch of cycles and ask them what's classic, they're going to walk right by any vintage lightweight 'cause really, they all look the same!

Vin - Menotomy Vintage Bicycles, Inc.
https://OldRoads.com

I have a couple "vintage" ride now two 1960s 3 speeds. Now for classic I'm staking out a Motobecane that's locked to a street sign in the neighborhood. I hope to get the owner on a good day and offer a bill or two for the ride, and see if he bites. What kills me is a friend just scored a classic Peugeot off a dumpster with an old skid lid trainer. I am envious of his chrome drops and Brooks saddle. I told him he had to give me the bike when he got tired of it.

I guess my stuff fits under "retro" - not classic or vintage yet. I have 2 mid 80's Bianchi road bikes and an early 80's Norco MTB. I basically own them because I picked them up very cheaply ( 3 bikes for $77) but plan to keep them and ride them.

By the way, nice website at www.oldroads.com The forum is always interesting - there is some amazing stuff people come across!