(The following was recovered from Web.Archive.org and was originally posted on tsarchive.net.) Transformers Case Assortments 20th Anniversary: Series 1 (2004)

Assortment a (#80500.0900) PK 2=> February 2004  80500  2   *Optimus Prime (version 1) Assortment b (#80500.0000) PK 2=> February 2004 - Present  80500  2   Optimus Prime (version 2) Assortment c w/poster, Wal-Mart Exclusive (#80500.0450) PK 2=> February 2004 - March 2004  80500  2   Optimus Prime (version 2)