This set consists of 801 standard-size cards issued in three series. This is a 1990 Pro Set Official NFL Football Series 1 Factory Sealed Unopened Wax Box and contains 377 cards. The second series 392. The fronts have striking color action photos and team colored borders on the top and bottom edges. Cards 1-29 are special selections from Pro Set commemorating events or leaders from the previous year. Pro Set also produced and randomly inserted 10,000 Lombardi Trophy hologram cards, creating quite a hobby sensation. Speculation is that one special Lombardi card was inserted in every tenth case. These attractive cards were hand serial numbered out of 10,000 (printed as 10M) and feature the words "Collector Edition" on the back.