5 SIMPLE TECHNIQUES FOR SUPERSONIC PLANE IN SILVER COIN

”  Other microprinting to the plane consists of “X-1” to the horizontal stabilizer on the plane in addition to a horizontal row of three “USPS” letters symbolizing the plane’s pitot tube. Repairs took several weeks to accomplish in addition to a 2nd flight was scheduled for mid-August. On 22 August 1951, the X-1D was lost in a very ga