FLOWN APOLLO 11 MYLAR.
Segment of mylar, approximately 1 inch square. Encased in lucite disc, the disc reading: "Apollo 11 Mylar, Command Module Thermal Coating."
This mylar is part of the materials used on mankind's first voyage to land men on the Moon. It was removed from the Apollo 11 Command Module Columbia after re-entry and splashdown on July 24, 1969.