Harrison Schmitt: The Scientist-Astronaut Moon Walker — An Underpriced Signature Guide
Harrison Schmitt is one of only twelve humans to have walked on the lunar surface, the only professional geologist to have done so, and one of only four surviving moonwalkers (as of 2025). His Apollo 17 mission in December 1972 was the final lunar landing of the Apollo program. Schmitt's signature is, by the logic of the space memorabilia market, substantially underpriced relative to what his historical position warrants.
The Market Underpricing
Schmitt's prices lag behind Buzz Aldrin, Edgar Mitchell, and other moonwalkers, despite his unique status as a scientist on the moon and his position in the final mission. The primary reason: he has remained an active signer for decades and has not cultivated the public profile that drove demand for Aldrin or Mitchell. This is a collector opportunity — supply from a living moonwalker will eventually end.
The Final Mission Narrative
Apollo 17 holds the distinction of being humanity's last lunar landing. Schmitt was the last trained scientist to work on the lunar surface; Gene Cernan was the last to step off. Any Apollo 17 crew material carries the "last" narrative that has proven to drive long-term value across collectibles categories.
Collection Strategy
For collectors building a moonwalker portfolio on a budget, Schmitt presents a compelling entry point. Authenticated signatures on quality Apollo 17 photographs represent value that the market has not yet fully recognized. Zarelli or PSA authentication is recommended for any Schmitt purchase above $500.
