Vintage bikes can be all over the map in rarity, quality, and value, depending on:
1) when they were made,
2) by whom,
3) what condition the frame, lugs, and paint are in,
4) what components are oif the bike and what is their condition?
5) was the bike a one-of-a-kind or limited-production bike? (such as a racing bike made for and raced by Eddy Merckx or someone else on a pro team)
6) Is it in "original" (as-built) condition?
7) has the bike or frame been "upgraded" or modified from its original condition?
To get an idea of what yours is worth, take lots of photos - especially closeups of the frame joints, fork crown, decals, serial number, and components. Send us a few and we will see what we can do for you...