Clyde Tombaugh Memorabilia

The most expensive item with a signature of Clyde Tombaugh (Clyde Tombaugh Autographed Signed Letter American Astronomer Discovered Pluto FP) so far was sold in August 2017 for $500.00 while the cheapest item (Clyde Tombaugh : Astronomer Signature on Album Page) found a new owner for $0.99 in April 2014. Sold items reached their highest average selling price in March 2014 with $145.00 and the month that saw the lowest prices with $14.26 was March 2013. In average, an autographed item from Clyde Tombaugh is worth $21.95.