Collectors who found one of the 5,500 2000-P Sacagawea dollars randomly hidden inside Cheerios-brand cereal products during a 2000 General Mills advertising promotion received an unexpected bonus unknown until now.
The 5,500 coins were struck with a reverse die produced from a different hub than that used for the regular issue Sacagawea dollars. The same die or another die produced from the same hub for the 5,500 dollar coins was also the version used for striking the reverse for the dozen Proof 2000-W Sacagawea 22-karat gold dollars that were placed aboard the space shuttle Columbia during its July 23, 1999, space mission.
Designer: Obv: Glenna Goodacre. Rev: Thomas D. Rodgers Sr.
Diameter: 26.5 millimeters
Metal content: .770 copper, .120 zinc, .070 manganese, .040 nickel
Weight: 8.1 grams
Mintmark: "P" (for Philadelphia, Pennsylvania) centered below the date