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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.

The A-B Emblem patch is a single piece and uses modern embroidery techniques. 

Unknown manufacturer, modern issue. Noted only because it spells crew member "Baudry" as "Baudy".

STS-55 (Space Transportation System 55), or D-2 was the 55th overall flight of the US Space Shuttle and the 14th flight of Shuttle Columbia. This flight was a multinational Spacelab flight involving 88 experiments from eleven different nations. The experiments ranged from biology sciences to simple earth observations.

Columbia carried to orbit the second reusable German Spacelab on the STS-55 mission and demonstrated the shuttle's ability for international cooperation, exploration, and scientific research in space. The Spacelab Module and an exterior experiment support structure contained in Columbia’s payload bay comprised the Spacelab D-2 payload. (The first German Spacelab flight, D-1, flew Shuttle mission 61-A in October 1985.) The U.S. and Germany gained valuable experience for future space station operations.

The D-2 mission, as it was commonly called, augmented the German microgravity research program started by the D-1 mission. The German Aerospace Research Establishment (DLR) had been tasked by the German Space Agency (DARA) to conduct the second mission. DLR, NASA, the European Space Agency (ESA), and agencies in France and Japan contributed to D-2's scientific program. Eleven nations participated in the experiments. Of the 88 experiments conducted on the D-2 mission, four were sponsored by NASA.

STS-55 (Space Transportation System 55), or D-2 was the 55th overall flight of the US Space Shuttle and the 14th flight of Shuttle Columbia. This flight was a multinational Spacelab flight involving 88 experiments from eleven different nations. The experiments ranged from biology sciences to simple earth observations.

Columbia carried to orbit the second reusable German Spacelab on the STS-55 mission and demonstrated the shuttle's ability for international cooperation, exploration, and scientific research in space. The Spacelab Module and an exterior experiment support structure contained in Columbia’s payload bay comprised the Spacelab D-2 payload. (The first German Spacelab flight, D-1, flew Shuttle mission 61-A in October 1985.) The U.S. and Germany gained valuable experience for future space station operations.

The D-2 mission, as it was commonly called, augmented the German microgravity research program started by the D-1 mission. The German Aerospace Research Establishment (DLR) had been tasked by the German Space Agency (DARA) to conduct the second mission. DLR, NASA, the European Space Agency (ESA), and agencies in France and Japan contributed to D-2's scientific program. Eleven nations participated in the experiments. Of the 88 experiments conducted on the D-2 mission, four were sponsored by NASA.

STS-37, the eighth flight of the Space Shuttle Atlantis, was a six-day mission with the primary objective of launching the Compton Gamma Ray Observatory (GRO), the second of the Great Observatories program which included the visible-spectrum Hubble Space Telescope, the Chandra X-ray Observatory and the infrared Spitzer Space Telescope. The mission also featured two spacewalks, the first since 1985.

The differentiator between makers of this patch is usually made by the way the stars are embroidered. These stars are slightly larger, but thin.

STS-37, the eighth flight of the Space Shuttle Atlantis, was a six-day mission with the primary objective of launching the Compton Gamma Ray Observatory (GRO), the second of the Great Observatories program which included the visible-spectrum Hubble Space Telescope, the Chandra X-ray Observatory and the infrared Spitzer Space Telescope. The mission also featured two spacewalks, the first since 1985.

The differentiator between makers of this patch is usually made by the way the stars are embroidered. This version of the STS-37 patch has smaller stars, and curiously, a different number of stars.

STS-37, the eighth flight of the Space Shuttle Atlantis, was a six-day mission with the primary objective of launching the Compton Gamma Ray Observatory (GRO), the second of the Great Observatories program which included the visible-spectrum Hubble Space Telescope, the Chandra X-ray Observatory and the infrared Spitzer Space Telescope. The mission also featured two spacewalks, the first since 1985.

The differentiator between makers of this patch is usually made by the way the stars are embroidered. This version of the STS-37 patch has large, thick stars. 

STS-37, the eighth flight of the Space Shuttle Atlantis, was a six-day mission with the primary objective of launching the Compton Gamma Ray Observatory (GRO), the second of the Great Observatories program which included the visible-spectrum Hubble Space Telescope, the Chandra X-ray Observatory and the infrared Spitzer Space Telescope. The mission also featured two spacewalks, the first since 1985.

The differentiator between makers of this patch is usually made by the way the stars are embroidered.

This mission's purpose was to deploy a Syncom/Leasat satellite into a geosynchronous orbit and retrieve and return the Long Duration Exposure Facility, whose orbit was decaying slowly after doing its mission. The crew would've consisted of 5 NASA astronauts and 2 Payload Specialists: Commander Dan Brandenstein, Pilot John Creighton, Mission Specialists Steve Nagel, John Fabian, and Shannon Lucid, and Payload Specialists Greg Jarvis and Charlie Walker. Scheduled for launch in either March or April of 1985, the orbiter that would've flown STS-51D was Discovery. There was some bad news, which was not about IUS problems this time: the STS-51E mission was cancelled and the crews changed missions; Brandenstein's crew moved to 51G and Bobko 's crew moved to the newly remanifested STS-51D flight. Charlie Walker chose to stay on this mission, because of the experiments he had to perform. So, an original member of STS-51E, Patrick Baudry, moved to STS-51G and Charlie Walker retained his spot as Payload Specialist 1.

This is Randy Hunt's replica version of the patch. The rounded tab corners and distinct color banding on the back are easy tells. One piece construction.

STS-61-A (also known as D-1) was the 22nd mission of NASA's Space Shuttle program. It was a scientific Spacelab mission, funded and directed by West Germany – hence the non-NASA designation of D-1 (for Deutschland-1). STS-61-A was the last successful mission of the Space Shuttle Challenger, which was destroyed during STS-51-L in 1986. STS-61-A currently holds the record for the largest crew, eight people, aboard any single spacecraft for the entire period from launch to landing.
The mission carried the NASA/ESA Spacelab module into orbit with 76 scientific experiments on board, and was declared a success. Payload operations were controlled from the German Space Operations Center in Oberpfaffenhofen, West Germany, instead of from the regular NASA control centers.

Single piece construction with modern embroidery. Radial white border stitching with a crude "ESA" symbol.

STS-61-A (also known as D-1) was the 22nd mission of NASA's Space Shuttle program. It was a scientific Spacelab mission, funded and directed by West Germany – hence the non-NASA designation of D-1 (for Deutschland-1). STS-61-A was the last successful mission of the Space Shuttle Challenger, which was destroyed during STS-51-L in 1986. STS-61-A currently holds the record for the largest crew, eight people, aboard any single spacecraft for the entire period from launch to landing.
The mission carried the NASA/ESA Spacelab module into orbit with 76 scientific experiments on board, and was declared a success. Payload operations were controlled from the German Space Operations Center in Oberpfaffenhofen, West Germany, instead of from the regular NASA control centers.

The A-B Emblem version has a large sew on tab.

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.

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.

At first glance it appears to be a A-B Emblem version, however there are some slight differences, such as the line of stitching under each contrail. The wings of the Wright Flyer are a little more narrow.

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.

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.

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.

The A-B Emblem patch has a sew-on tab. 

This mission's purpose was to deploy a Syncom/Leasat satellite into a geosynchronous orbit and retrieve and return the Long Duration Exposure Facility, whose orbit was decaying slowly after doing its mission. The crew would've consisted of 5 NASA astronauts and 2 Payload Specialists: Commander Dan Brandenstein, Pilot John Creighton, Mission Specialists Steve Nagel, John Fabian, and Shannon Lucid, and Payload Specialists Greg Jarvis and Charlie Walker. Scheduled for launch in either March or April of 1985, the orbiter that would've flown STS-51D was Discovery. There was some bad news, which was not about IUS problems this time: the STS-51E mission was cancelled and the crews changed missions; Brandenstein's crew moved to 51G and Bobko 's crew moved to the newly remanifested STS-51D flight. Charlie Walker chose to stay on this mission, because of the experiments he had to perform. So, an original member of STS-51E, Patrick Baudry, moved to STS-51G and Charlie Walker retained his spot as Payload Specialist 1.
3" A-B Emblem version of the highly-sought patch.

This mission's purpose was to deploy a Syncom/Leasat satellite into a geosynchronous orbit and retrieve and return the Long Duration Exposure Facility, whose orbit was decaying slowly after doing its mission. The crew would've consisted of 5 NASA astronauts and 2 Payload Specialists: Commander Dan Brandenstein, Pilot John Creighton, Mission Specialists Steve Nagel, John Fabian, and Shannon Lucid, and Payload Specialists Greg Jarvis and Charlie Walker. Scheduled for launch in either March or April of 1985, the orbiter that would've flown STS-51D was Discovery. There was some bad news, which was not about IUS problems this time: the STS-51E mission was cancelled and the crews changed missions; Brandenstein's crew moved to 51G and Bobko 's crew moved to the newly remanifested STS-51D flight. Charlie Walker chose to stay on this mission, because of the experiments he had to perform. So, an original member of STS-51E, Patrick Baudry, moved to STS-51G and Charlie Walker retained his spot as Payload Specialist 1.