It varies by the type of item it is, how durable it is, and how many survive, as well as the era an item is crafted in and who crafted it. My wife collects carnival glass and depression glass. For example, IIRC, for these types of glass anything over 50-60 years old is considered antique (1950s or older), the period from the late 50s through the 70s is vintage, and anything after that is new.I thought TRUE antiques were over 100 years old? ...