3.5" / 90mm

Cloth back

This is the Gemini X patch as worn by the crew. 

This reproduction was made by A-B Emblem in conjunction with Gene Dorr as a series of historically accurate crew patch reproductions. 

Because Gemini 4 lacked an official patch, many designs were produced to commemorate it. 

Gemini 4 lacked an official emblem. This was designed with input frrom Gemini 4 astronaut James McDivitt in 2009. 

Sold by Astronaut Central.

STS-1 was the first orbital flight of NASA's Space Shuttle program. Space Shuttle Columbia launched on 12 April 1981, and returned to Earth on 14 April, having orbited the Earth 37 times during its 54.5-hour mission. Columbia carried a crew of two – mission commander John W. Young and pilot Robert L. Crippen. It was the first American manned space flight since the Apollo-Soyuz Test Project on 15 July 1975. STS-1 was also the only US manned maiden test flight of a new spacecraft system, although it was the culmination of atmospheric testing of the Space Shuttle orbiter.

This version appears very similar to the standard A-B Emblem STS-1 patch, however, the wings have flaps and SRBs are more detailed and the wings lack both the USA flag and "USA" lettering. The black thread also outlines the orbiter. The patcbh is 4 3/4" high.

The in-flight crew escape system is provided for use only when the orbiter would be in controlled gliding flight and unable to reach a runway. This condition would normally lead to ditching. The crew escape system provides the flight crew with an alternative to water ditching or to landing on terrain other than a landing site. The probability of the flight crew surviving a ditching is very slim.

The hardware changes required to the orbiters enable the flight crew to equalize the pressurized crew compartment with the outside pressure via the depressurization valve opened by pyrotechnics in the crew compartment aft bulkhead that would be manually activated by a flight crew member in the middeck of the crew compartment; pyrotechnically jettison the crew ingress/egress side hatch manually in the middeck of the crew compartment; and bail out from the middeck through the ingress/egress side hatch opening after manually deploying the escape pole through, outside and down from the side hatch opening. One by one, each flight crew member attaches a lanyard hook assembly, which surrounds the deployed escape pole, to his or her parachute harness and egresses through the side hatch opening. Attached to the escape pole, the crew member slides down the pole and off the end. The escape pole provides each crew member with a trajectory that takes the crew member below the orbiter's left wing.

There is also a red suited version of this Shuttle Crew Escape Team Member patch.

The in-flight crew escape system is provided for use only when the orbiter would be in controlled gliding flight and unable to reach a runway. This condition would normally lead to ditching. The crew escape system provides the flight crew with an alternative to water ditching or to landing on terrain other than a landing site. The probability of the flight crew surviving a ditching is very slim.

The hardware changes required to the orbiters enable the flight crew to equalize the pressurized crew compartment with the outside pressure via the depressurization valve opened by pyrotechnics in the crew compartment aft bulkhead that would be manually activated by a flight crew member in the middeck of the crew compartment; pyrotechnically jettison the crew ingress/egress side hatch manually in the middeck of the crew compartment; and bail out from the middeck through the ingress/egress side hatch opening after manually deploying the escape pole through, outside and down from the side hatch opening. One by one, each flight crew member attaches a lanyard hook assembly, which surrounds the deployed escape pole, to his or her parachute harness and egresses through the side hatch opening. Attached to the escape pole, the crew member slides down the pole and off the end. The escape pole provides each crew member with a trajectory that takes the crew member below the orbiter's left wing.

There is also a blue suited version of this Shuttle Crew Escape Team Member patch.

This is the 3 1/2" Lion Brothers Apollo 11 patch. Bare cloth back.

Of vintage make, fully embroidered, bare backing.

This is a modern reproduction of the original Apollo 11 Lunar Team patch. There are minor differences in the letter stitching and embroidery styles. 

The feature that makes this distinct are the stitching of the CM/SM. Where, normally, the maneuvering pods are "+", these are distinct dots.

Bare thread back.

Aussat (Optus) A1

Operational Location: 160° east (1985–1993)[3]
Launch Date: 27 August 1985 (Out of service; not deorbited)
Aussat 1 was deployed by Space Shuttle Discovery during the first day of the STS-51-I mission.

STS-51-G was the eighteenth flight of NASA's Space Shuttle program, and the fifth flight of Space Shuttle Discovery. The seven-day mission launched from Kennedy Space Center, Florida, on 17 June 1985, and landed at Edwards Air Force Base, California, on 24 June. Sultan Salman Al Saud of Saudi Arabia was on board as a payload specialist; Al Saud became the first Arab, the first Muslim, and the first member of a royal family to fly into space.[1] It was also the first Space Shuttle mission which flew without at least one astronaut from the pre-Shuttle era among its crew.

This is a 3-3.5" version of the STS-51G patch. Twill backing with white thread used for the contrails instead of light blue.

This variation features the astronaut names displayed on a curve rather than a straight line.

Outwardly appears identical to the A-B Emblem version, however the rising shuttle is lacking any markings on its wings. Measured as 3 1/2" inches by the seller.

This Apollo 16 can be idenditifed by the subdued lunar landscape. The other details are fairly nice, though the stars appear overly large. Vacuum-sealed back.

The real tell here is the use of "+" stitching to create the trail of the Intrepid and the distinct, lizard-skin like lunar surface.

While not the worst reproduction of an Apollo 14 patch, the vacuum-sealed back and modern stitching aren't very authentic. 

This is an intriguing Apollo 15 patch. It appears to be of vintage issue with a cloth back. It is fully-embroidered. The owner said it was 4" in diameter but I am skeptical, I believe it is no more than 3 1/2" in diameter. The red chevron has black outlining. The "XV" does not appear to be rendered, but treated as crater detail instead. There is also a version of this patch with no black outline on the chevrons.

This Apollo 12 patch features crude stitching and a particularly distinct lunar surface. 

This patch is a member of a set of Apollo patches that, while closely resemble A-B Emblem's 3" set, have several identifiable differences that set them apart. 
 

Faithful reproduction by Eagle One Aerospace. The "II" for that symbolizes Gemini are straight. 

This patch matches the crew-worn patch. It lacks the names of the astronauts that is common to souvenir versions.
Eagle One Aerospace version, can be identified by the point at the tip of the capsule. 

This is an unofficial patch for the un-patched flight of Gus Grissom and John Young.
Eagle One Aerospace reprodution.

Astronaut Jeffrey S. Ashby (Cmdr., USN), has been replaced as pilot for the STS-85 crew by astronaut Kent Rominger (Cmdr., USN), a two-time Shuttle pilot. Ashby, who will be reassigned to a later flight, has been named as an assistant to the Director, Flight Crew Operations.
While A-B Emblem did acknowledge making a prototype STS-85 patch, this patch is not it. This was made by an unknown manufacture and differs slightly from the official STS-85 patch, notably the 3.5" size and the white border around the orbiter.