Apollo Command Module sextant ablative cover in two pieces: one piece, still sealed in its plastic, measures approximately 11″ in diameter and 2.75″ tall, stenciled on the top with a white part number, "1021378-031"; and the other measures approximately 8″ in diameter and 2″ tall, and is stenciled on the top with a white part number, "1021377-021." The second piece is in plastic once sealed with "Controlled Cleanliness" stickers. In overall fine condition. These were bolted to the moving parts of the sextant and telescope of the optical unit and provided thermal protection (and some sun shading) for the optics.
Terms and abbreviations used in our descriptions.