The 2021 Christa McAuliffe Teaching Silver Dollar Commemorative Box COA - TCCCX is a special coin featuring a modern silver/clad composition, with a denomination of $1. This commemorative coin celebrates the legacy of Christa McAuliffe, a renowned teacher who tragically lost her life during the Challenger space shuttle disaster. Produced by the United States Mint, this business strike coin is a unique and collectible piece that pays tribute to McAuliffe's contributions to education and our nation's history.