Letter sent from Faaborg to Aabenraa in Sonderjytland 21 January (1875) bearing a 4 sk. and 4 øre bicoloured, mixed franking skilling/øre. Although stamps are defect, rare in combinations on letter. 4 sk. equals 8 øre, plus 4 øre, 12 øre correct rate to the then German Sonderjytland.