HIS ROYAL HIGHNESS KONSTANTIN.  (1920-1969). Prince Konstantin of Bavaria, member of the Royal House of Wittelsbach. Arrested after the failed attempt to assassinate Adolf Hitler and remained imprisoned for the rest of WWII. Died in a plane crash.  Photograph, black & white 4”x5” boldly signed on the lower white margin “Konstantin R.”  Notation on back of photo states it was received June 1969. The plane crash was a month later on July 30 ..................................$95.00