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It would probably be better to start a new thread than piggyback in on a very old one (and the forum moderators may move this posting just to keep things more up to date), but here's a website that gives some information on the differences between Super 8mm and Regular 8mm film.
At the start of the 20th century, the advent of more economical motion picture film formats, namely 16mm, 8mm, and Super 8mm film, allowed millions of people to capture home videos and amateur movies. With digital video long ago replacing these aging film formats, families have been left looking...
There were projectors that could play BOTH formats with the flip of a switch near the lens, but they are less common than ones that only play one format.
If you want to post pictures, I could tell you the difference, but in a nut shell, the film with a smaller perforation (sprocket hole) is the Super 8mm and the film with the larger perforation is the Regular 8mm.
Super 8mm was introduced in 1965, but Regular 8mm continued to be available as well, so you can't definitively date the age of a Regular 8 film, but a Super 8mm film has to be no earlier than 1965.
In fact, you can still buy BOTH types of film for movie cameras to this day.
Hope this helps.