Titles of prints in this offering are: Mariner 10 Spacecraft, Mariner Venus-Mercury Mission 1973-1975, Photo of Venus Taken by Mariner 10 on 6 February 1974, Photos of Mercury Taken by Mariner 10 on 29 March 1974 (3), Photo of Mercury Taken by Mariner 10 on 29 March 1974 (3), Photo of Mercury Taken by Mariner 10 on 21 September 1974 (2), and Photos of Mercury Taken by Mariner 10 on 21 September 1974. Prints are in excellent condition overall; a couple of the prints have small amounts of foxing. Prints measure 8" x 10".