How old, crude or used do sex toys have to be to be considered "vintage"?
I will bet you a shot and a beer very old items go back 4,000 + years and were used in some kind of religious rite. Made of wood or stone for some kind of a fertility rite.
May still be used today in the out backs of Africa or Asia, original use may have been to prepare virgins for sex and coming woman hood, to reproduce and help build society and make new warriors to protect their clan-tribe .
I find it difficult to relate to this as a sex toy for a male. But then, some males have some very odd sex practices, not for religious rites but for some kind of self enjoyment. Yes I have heard about the Asian string of pearls.
As far as I know we have yet to find light bulbs in the Butts of woman, we do find all kinds of stuff in the VJ, drugs, guns, class rings and money.
Vintage sex toys, those over 150 years old will in some communities bring in some big money, However those dildo's that are of the sort to look like they have been cut are rip offs of the valuable ancient thing and needs to be evaluated by an expert.