Los 6259
1890, prepaid postcard sent june 10th from Heligoland (Great Britain) via Hamburg to Carlskrona. Although belonging to Great Britain, Heligoland had joined the NGC already in 1866 and was included in the GPU treaty of 1874. Heligoland became German territory on july 1st, only a few days later than the date of the postcard. As the postcard was posted in Hamburg and not in Heligoland the prepayment (10 Pfennig) was not accepted. Instead the postcard was regarded as an unpaid letter with double the missing postage, 2x 20 öre, to be paid on arrival and cancelled 12.6.1890. Also transit PKXP No 2B INR U. 11.6.1890. Fold in upper left corner of card.