Clyde Tombaugh Signed Index Card with Pluto Discovery Inscription

This is an exceptional signed index card from Clyde W. Tombaugh, the American astronomer best known for discovering Pluto in 1930. The autograph has been fully authenticated by Beckett Authentication Services and includes an inscription detailing his historic discovery.

About the signer: Clyde Tombaugh (1906–1997) was the American astronomer who discovered Pluto on February 18, 1930, while working at the Lowell Observatory. His discovery reshaped our understanding of the solar system and remains one of the most significant astronomical findings of the 20th century.

• Authentic autograph of Clyde W. Tombaugh
• Beautifully inscribed referencing the discovery of Pluto
• Signed on a clean index card, perfect for display or framing
• Authenticated by Beckett Authentication Services
• From the prestigious Steve Grad Autograph Collection – Steve Grad has been a regular cast member on the History Channel’s Pawn Stars since 2013, the lead authenticator at BECKETT Authentication, and former Principal Authenticator at PSA/DNA (2002–2016)

A rare opportunity to own a historically important autograph from the discoverer of Pluto, fully authenticated and ready to add to your collection.