Depends on what you mean by antique.
I remember spending half a day downloading a single dirty picture on my 2400 baud modem from BBS systems, and trading loops on floppy discs with friends in high school.
My first exposure to "real" porn was in the late 80's when a friend of mine discovered his dad's video stash.
I still have a soft spot for the 1980's "Golden Age of Porn" movies. The production value was high, many were shot on actual film vs video, and while the actors and actresses were not as attractive as "modern" porn stars, there was a certain allure and quality to the movies that modern counterparts lack.