Like all collectibles, the sports memorabilia market has its own terms and slang. The following is a brief definition and explanation of the most frequently used sports collecting terms.
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|An issue or set of cards that does not have the consent of the given league or player’s association. The cards are both illegal and of little value.|
|A sheet of cards that has not been cut by the factory into individual cards. Most uncut sheets contain 132 cards|
|Universal Rarity Scale|
|A collectibles rarity information scale developed in 1998 by 21 major collectibles experts in order to both define rarity within their individual markets and allow collectors and dealers from different collectibles markets to more easily communicate with one another. The Universal Rarity Scale is a 10-point scale. The least rare collectible items are those where more than 10,000 examples are estimated to exist. These items are designated “URI” and are described as “readily available.” The rarest items are those where only one example is known to exist. These rarities are designated “UR10” and are described as “unique.”|
|A program that has not been filled in by a sports fan.|
|See Also -   traded set|
|A major sports card manufacturer that started in 1989 with a premium issue. The 1989 Upper Deck set is very well known for its inclusion of the extremely popular Ken Griffey rookie card. The company produces sets for all sports, as well as other lines of cards such as SP, SPX, SP Authentic, UD3, and Collector’s Choice.|