Mercury 7 Astronauts Signed Cover with Zarelli

Description

First day cover in very good to fine condition signed by 6 of the 7  Mercury 7 astronauts including Shepard, Glenn, Carpenter, Cooper, Slayton and Schirra. Encased in an easily removable lucite block for display. Item has been on-line preauthenticated by Zarelli Space Authentication Sept 2020: ("Item likely to pass full authentication".) Similar item sold at Heritage Auction June 5 2020 for 00.