SG7.vk 1d Red Plate 11 with RED & BLACK MX

SG7.vk 1d Red Plate 11 with RED & BLACK MX on piece. Plate 11 1d with Red Maltese Cross Cancel in the exact same Red ink as the double arc COLNE Cancel and overcancelled with a Black MX and also a BRADFORD Town Dated Cancel and finally a pre-print paper crease. A lot of varieties all on one stamp and likely unique. SG Cat £3,500 off cover and unpriced on cover.