1d Stamp - Perf 16 x 16; letters KI, worn surface; Watermark indistinct but part of W4 large crown has been observed; Stamp contains a central horizontal crease - see scan. Head Die - appears to be Die II - see scan, but some of the key features are obliterated by the London oval postmark (numeral 15 - London Woodford Highbury) - Type 7/1 : SG36  CV £80

2d stamp - Perf 16 x 16; Letters SK Watermark indistinct - assumed to be W4 large crown as the stamp is printed on white paper; London oval postmark (numeral 14 - Leyton St Martins Place) - Type 7/1 : SG36a  CV £325

Perforations measured using a Westgate gauge;