Two sheets of 60 four-cent Project Mercury postage stamps, each affixed to 9.5 x 11.75 off-white envelopes. One is signed at the bottom in black felt tip by Tom Stafford, Frank Borman, and James Lovell, and in blue ballpoint by Wally Schirra, and postmarked “Stafford, Texas,” “Shiro, Texas,” “Beaumont, Texas,” and “Lovell, Wyoming,” as well as two Gemini cancellations’ the other envelope signed in blue ballpoint, “Eugene Cernan,” and “Thomas P. Stafford,” and postmarked “Eugene, Oregon,” and “Kerman, California,” and “Thomas, Oklahoma,” and “Stafford, Texas,” as well as a Gemini 9 cancellation. In fine condition, with an address to lower right of both envelopes, cancellations lightly affecting a couple of signatures, and cancellations to stamps also. Pre-certified Scott Cornish and RR Auction COA.