And when is something classic or vintage? A bike could be vintage but not classic and vice a versa. Vintage seems to me a time related thing while classic most of the time also is, but classic is also used to point out quality and rarity. Like when people say ‘that’s a new classic’. A bike from 5 years ago which is out of production could be a classic.
But like someone said, just post pictures. Someone will approve, someone will likely disapprove if it’s classic, vintage or otherwise 🙃