Postage Stamp NASA YF-12 Diecast Collectible ASO 1214 including both airspeed and altitude

including both airspeed and altitude records

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Postage Stamp NASA YF-12 Diecast Collectible ASO 1214 including both airspeed and altitudeThe YF 12 was an experimental fighter interceptor version of the Lockheed A 12 reconnaissance aircraft. YF 12s were used in a joint Air Force NASA research program to study the thermal, structural, and aerodynamic effects of sustained, high altitude flights. The YF 12 was fabricated primarily from titanium alloy and was painted flat black, which enabled it to withstand high stresses in altitude and temperatures over 500F. The YF 12 set a speed record