This lot is closed for bidding. Bidding ended on 4/30/2014
Collection of four Clyde Tombaugh autographs on blank 5'' x 3'' cards. Here, the famed discoverer of the dwarf planet Pluto signs in blue or black ink, ''Clyde W. Tombaugh / Discovered 9th planet, / Pluto, on 18 Feb 1930''. Minor toning to cards else near fine.