In the photo below we see Wally Schirra on April 17, 1967, testifying before a House investigation subcommittee in a probe on the fire that occurred aboard Apollo I, in which three NASA Astronauts died. Wally Schirra is pictured below in between Donald Slayton and Alan Shepard. If you look closely Wally Schirra is wearing his Pepsi GMT-Master.
Apollo 7
In the photo below we see Wally Schirra's Rolex Oyster bracelet with his GMT-Master and the Nasa caption reads "Donald (Deke) Slayton, Director, Flight Crew Operations (l) at the Manned Spacecraft Center, Houston, briefs Apollo 7 Astronauts from left: Donn Eisele, Walter Schirra, and Walter Cunningham. October 9, 1968. Scan by Ed Hengeveld. Caption by Kipp Teague"
In the photo below we see an official Nasa photo with a caption that reads: "Astronaut Walter M. Schirra, Jr., enjoys breakfast before boarding the Apollo 7 spacecraft. October 11, 1968. Scan by Ed Hengeveld. Caption by Kipp Teague."
For the image below the Nasa caption reads: "Apollo 7 astronauts breakfast with NASA officials. Walter Cunningham, second from left; Donn F. Eisele, second from left across table and Walter M. Schirra, Jr., next to Eisele. Kenneth Kleinknecht, Manager, Apollo S Spacecraft Office. October 11, 1968. Scan by Ed Hengeveld. Caption by Kipp Teague."
Nasa caption for image below reads: "Apollo 7 astronauts breakfast with NASA officials prior to their launch into earth orbit atop a Saturn IB space vehicle. Joining the trio at breakfast was James Webb, left foreground, former NASA Administrator. October 11, 1968. Scan by Ed Hengeveld. Caption by Kipp Teague."
In the photo below we see Apollo 7 Commander, Wally Schirra suiting up for Apollo 7 and notice he is wearing a really cool Omega Speedmaster on the outer sleeve of his space-suit!
This next photo of Wally Schirra appears courtesy of Philip and was taken on October 23, 1968 during the Apollo 7 Mission debriefing after the crew returned from the USS Essex recovery ship, and you can clearly see Schirra's Pepsi GMT-Master on his wrist. These facts beg the question of wether he wore his Rolex on the Apollo 7 mission?
The official NASA caption for the image above and below reads: "Apollo 7 astronauts (l-r) Walter Cunningham, Donn F. Eisele, and Walter M. Schirra, Jr., compare notes at a mission debriefing conducted today at the Kennedy SpaceCenter. October 23, 1968. Scan by Ed Hengeveld. Caption by Kipp Teague."