Los-Nr. 6785

"25 ÖRE" Postage due charge mark on unpaid letter sent August 9th 1875 from Bergen (Norway) to Strömstad. The single prepaid rate was 12 öre but became 25 öre when charged to the addressee. The charge mark was struck at the travelling post office PKXP.NR 19. The Postmaster at Strömstad should have affixed adhesive postage due stamps corresponding to 25 öre on the reverse, now there is only one single 1 öre stamp (uncancelled and damaged when letter was opened).