Buzz Aldrin's Moon Pen Sells for Over $850,000 at Auction 2026

The felt-tip pen Buzz Aldrin used to fix a broken circuit-breaker and escape from the moon in 1969 has sold at auction in New York for more than $850,000. This remarkable piece of space history highlights the ingenuity required during the Apollo 11 mission.

The Historic Apollo 11 Mission and the Broken Switch

Armstrong and Aldrin had landed on the lunar surface in July 1969 and were preparing to sleep after their first moon walk when Aldrin noticed a small black switch on the floor. As he writes in his autobiography, the broken switch had snapped off from the engine-arm circuit breaker, the one vital breaker needed to send power to the ascent engine. Without it, the astronauts risked being stranded on the moon forever.

How a Pen Became a Lifesaver

Using the felt-tip pen from his pocket, Aldrin inserted the tip into the tiny hole where the switch had been, effectively bypassing the broken circuit. This quick thinking allowed them to fire the ascent engine and return to Earth. The pen, a dented silver plastic Duro Rocket model, sold for $857,600 at Sotheby's, exceeding initial estimates.

Key Takeaways from the Auction

• The pen and broken circuit breaker came from Aldrin's personal collection.
• Five bidders competed for the lot, driving the price to over $850,000.
• The sale underscores the enduring value of Apollo-era memorabilia.

Why This Pen Matters to Collectors

Space memorabilia has become a lucrative investment, with items like this felt-tip pen fetching premium prices. The story of its use—saving the astronauts from being stuck on the moon—adds immense historical and emotional value. Collectors view such artifacts as tangible links to humanity's greatest achievements.

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