Heligoland. 1889, Postal stat. answer card 10Pf (5 Farth.) used from ITZEHOE 21.10.89 to Heligoland, vertical crease in middle otherwise v.fine and clear postmark, addressed to Pastor H.Schröder of Heligoland, at back with another mkg of Itzehoe from double card arrival, scarce (Image)