NOT KNOWN DETAILS ABOUT SILVER SUPERSONIC PLANE COIN

An experimental rocket plane, the Bell XS-one, has flown a lot quicker as opposed to speed of audio numerous occasions lately, Aviation 7 days experiences in a problem being launched tomorrow. ^ Among the many flights he designed right after breaking the audio barrier was just one on Dec. twelve. 1953, when he flew an X-1A to a document of in exce