As part of the 2001 set, Donruss issued inserts "retro" sets for 1999 and 2000 to fill in the missing years. They had different designs for each year and also had the Stat Line parallels. They might be considered 1999 and 2000 sets if you look at the player select and stats on the backs, but to be completely accurate they are actually 2001 Donruss inserts.
From basecardpedia.com:
Retroactive
These two sets were designed to simulate what a 1999 and 2000 Donruss set would have looked like, if they had been released. The design is based on the respective year's Donruss Football set, and the player's are shown in the uniforms of the team the played for in that particular year.
The "1999" Retroactives were inserted into hobby packs and the "2000s" in retail. Both sets are 100 cards with eighty veterans and 20 serial-numbered "Rated Rookies." In addition, there are a slew of Stat Line parallels, and five additional Diamond King Inserts. Unfortunately, rather than simply including it with the other 2001 cards, the Retroactive card was wrapped separately in it's own one-card "pack." These single-card packs were extremely difficult to open, and as a result, many of the Retroactives were damaged coming out of the pack.
vrooomed wrote:
From Baseballcardpedia.com:
2001 Donruss is a 220-card set released in May, 2001. It was the first "Donruss" branded card set since their previous owner, Pinnacle Brands went bankrupt in the Summer of 1998, and the first product released by Playoff since acquiring an MLB/MLBPA license in February 2001.
http://www.baseballcardpedia.com/index.php/2001_Donruss
Canadian member collecting John Olerud, Toronto Blue Jays team sets, and Topps base sets.
Always open to trading! Cardboard Corner