AUSTRALIA / NEW SOUTH WALES / N.S.W.
1891 6d green Postage Due, perf. 10:10, with a reversed crown NSW watermark, cancelled to order – without gum, no thins, tears or bends.
The Australian Commonwealth Specialists’ Catalogue states that only a handful of stamps with a reversed watermark are known and all are mint. This would then be the first recorded example of a used (CTO) example.
BW(ACSC) Cat. # ND30a + w
SG Cat. # D6