Studio was a slightly more upmarket set produced in the 90s by the company that released the various DonRuss and Leaf branded sets. (Sometimes the copyright notices are for DonRuss; sometimes they are for Leaf - it's all over the place!) In later years Studio fluctuated between being Leaf Studio and DonRuss Studio, but before that they were just 'Studio'.
Card Number 756: Studio, 1995; #25
There were 7 cards in each pack and every one of them had a 'plastic' card alongside six of the ordinary cardboard base cards. The plastic cards were gold or the much rarer platinum. The colour scheme was presuambly chosen to mimic the colours of different classes of credit cards.
Card Number 757: Studio Gold, 1995; #25
These cards still feel quite different, over 25 years after they were released. This was the last time the range was relased just as 'Studio' and the set went back to using posed portraits in subsequent years (blogged here), so maybe this innovative approach didn't appeal to collectors. However, I think the set designers deserve some credit for trying something new and unique with this set.
Total: 757 cards