1920/1939, incl. service and postage?due stamps,. extensive, often parallel into collection led mint and cancelled on old Scott leaves, at this incl. numerous compl. set issues guilder provisional arrangement compl. mint, souvenir sheet of 3 mintly and with first day special postmark 11-28-1937, distant German empire Danzig reintegration compl. perfectly mint never hinged, untouched object with a high catalogue value