Actually, vintage refers to wine, ..... age of the wine, ..... which could be 1 or 100 years old. But "vintage" is also used to "pick an age" of just about anything and is probably used just as often as "circa" when talking about something.
I guess the un-official age to be called an antique is 100 years or greater.
But, as far as I'm concerned, .....
it is buyer's choice. The difference between an antique and a collectible is kinda fuzzy and really depends on the item itself and the age of the buyer.
If the item is a few years older than the buyer they will most often call it an antique, ...... but, ...... that depends on how plentiful that item is. The more plentiful they are, the more likely they will be called a collectible. For instance, pottery and glassware are seldom ever referred to as antiques, except as a group, .... no matter how old they are.
Aka: antique pottery - collectible plates, collectible shaving mugs, etc. Vintage 1890's - circa 1895.
Remember, ..... the buyer is always right.