1. Too old to be considered modern, but not old enough to be considered antique. Often used to describe items for sale online such as ebay auctions or craigslist posts though may also be found in printed listings such as classified ads. Can also be a euphemism for "heavily used" items.
2. Retro, recently out of style with potential to make a comeback
In these days of high definition video, VHS is often characterized as vintage and will one day be antique.