50 Pfg Germania on chrome yellow paper on piece, centric cancellation single circle postmark \"MARIENBURG 16 6 20\", very rare stamp, expertized Mikulski International Association for Philatelie Experts with photo certificate: . That this stamp are genuine: 15 stamp in the printing sheet to 20 pieces, also genuine used was. Preservation: good, a little to the right off-center and very strong used. \", Michel 1.000.-