https://tubepornclassic.com/videos/148351/hideout-in-the-sun/
https://xhamster.com/videos/mona-the-virgin-nymph-1970-738364
https://www.xvideos.com/video56561283/el_satario_or_el_satiro_1907_first_porn_film_in_history
The last one looks interesting
Using the term "oldest existing porn in the world" is very misleading
Old porn movie is what they are.
Porn has existed for as long as people can draw.
I remember working on a concert of theirs at a pub in Oz, he was so fucked up the tour organiser called a dodgy doctor who gave him a massive injection of various things that got him up and on stage
Great show
Amazed he lived as long as he did