Lot 51298 – 1885 8a dull mauve, type 1 curved overprint, with error overprint inverted, mint

1885 8a dull mauve, type 1 curved overprint, with error overprint inverted, mint with large hinge remnant, fine and unique recorded in private hands, with only four possible examples and the only other recorded example of this variety in the Royal Collection, one of the most important stamps of the Indian Convention States, ex Sturton, cert. RPS (1959) (S.G. £18’000).