This is a great looking U S Air Force SR-71 "Blackbird" challenge coin. Coin has reeded edges and is about 1 9/16" in diameter with raised lettering and gold plated. Coin
is contained in an acrylic air tight holder and displayed in an
attractive black velvet presentation box which will make this a
very impressive gift.
The Lockheed SR-71 "Blackbird" was a long-range, Mach 3+ strategic reconnaissance aircraft that was operated by the United States Air Force. It was developed as a black project from the Lockheed A-12 reconnaissance aircraft in the 1960s by Lockheed and its Skunk Works division. American aerospace engineer Clarence "Kelly" Johnson was responsible for many of the design's innovative concepts. During aerial reconnaissance missions, the SR-71 operated at high speeds and altitudes to allow it to outrace threats. If a surface-to-air missile launch was detected, the standard evasive action was simply to accelerate and outfly the missile. The SR-71 was designed with a reduced radar cross-section.
The SR-71 served with the U.S. Air Force from 1964 to 1998. A total
of 32 aircraft were built; 12 were lost in accidents and none lost to
enemy action. The SR-71 has been given several nicknames, including Blackbird and Habu. It has held the world record for the fastest air-breathing manned aircraft since 1976; this record was previously held by the related Lockheed YF-12.
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