Master Set is a term used to describe a complete set of cards. Unlike a normal complete set, it includes all errors, correctionsshort prints and variations as well as the base set.

As an example: The 2001 Bowman Heritage baseball card set has a base set of 330 cards plus 110 short prints. The Master Set of 2001 Bowman Heritage is 440 cards.

Some collectors take the concept of the Master Set one set further and consider including all inserts as well as the base set and short prints. However, with the current number of 1/1's being released for virtually every new set on the market, this type of set is nearly impossible for most sets produced after 2005.