Lot 30936 – 1915 Roo 5s grey and yellow, wmk 5, rejoined vertical pair showing variety YELLOW PORTION PRINTED DOUBLE

1915 Roo 5s grey and yellow, wmk 5, rejoined vertical pair showing variety YELLOW PORTION PRINTED DOUBLE with a lightly inked second impression displaced 8mm downwards clearly detectable on both stamps, used with « CHIEF PARCEL (OFFICE) » cancels, fine and unique multiple with only a few single examples recorded (of which two are in the Royal Collection), ex James B. Williamson (SG £8’000+)