Philipp Reiss German Telephone Inventor Scientist Postcard First Day Cover

zx364  A rare limited edition first day cover from Germany of Johann Philip Reiss with stunning artwork of this historic figure and the original stamp on its first day of release.It features the special first day of release commemorative hand frank for full authenticity (see scan) with further details of Johann Philipp Reis on reverse (in German language) unused and mint. 

Johann Philipp Reis was a self-taught German scientist and inventor. In 1861, he constructed the first make-and-break telephone, today called the Reis telephone. It was the first device to transmit a voice via electronic signals and for that the first modern telephone.