The oldest baseball acetate card in my collection comes from the 1994 Donruss Studio line. These were inserted at a rate of 1:36 packs, or one per box. The 8 card set is designed to look like a film strip, a pretty obvious idea for acetate cards, but one not widely used. These cards scan very nicely, but don't look as good in person, the whole card is clear as opposed to the player photo being solid like on most acetate cards. This leads to a really washed out look on the card and make it really dull. It adds to the feel of being a photo negative, but makes for a pretty boring card.