CHINA - German P.O. - Austria. 1901 picture post card, franked with London Dragon 4c sufficient for external card rate, was posted in German PO where the Chinese 4c was not recognized and thus taxed (blue crayon 10 indicating postage due in 10 / 12.5 centime). Perhaps found in a Postal box? Austrian postage due 10 Heller applied on arrival.and forwarded in Vienna Very unusual postage due usage. (Photo). Est. 200 - 300 CHF.