This was the first ever Spider-Man trading card set. It was released in 1989, a year before the first "all-Marvel" (Series 1) trading card set was published in 1990.
Artwork is not formally credited but appears to be McFarlane's work. The back of the cards when assembled created two B&W posters (definitely Todd McFarlane illustrations).
There are 45 cards in the set (including one index card), no chase cards, no title cards, no known promo cards. Images were framed and titled on the front and all images were vertical (portrait orientation).
Scans are courtesy of fellow SpiderFan Celeste. I have yet to acquire this set. When I do get my hands on a copy, I'll upload some higher resolution images.