18th. 1793, permanent - bitumen based - established 1823.
This is actually a quite romantic story and a recurring subject in many books and movies: the 1793 experiments made the photo disappear over - quite a short - time.
Dorian Grey, Back to the future, etc.
(then again, my early youth Polaroids disappear too, to my chagrain, but at least they lasted 65+ years )