8'th classicphil Auction - Day 2

1920, 50 r. on 1 k., orange with pale VIOLET INVERTED surcharge, UNUSED, original gum, exceedingly rare item in perfect preservation, illustrated in BATUM UNDER OCCUPATION 1917-21/by Grigoleit and Klempka, on page 100, cert. BPA, XF! Schätzpreis 3.800€.