India 1921 'NINE PIES' on 1a rose-carmine SG192b

India 1921 'NINE PIES' on 1a rose-carmine, interpane block of 32 (4x8) from lower right corner of sheet, showing error 'PIES PIES' on third pane, R2/13-16 and fourth pane normal, very fine original gum (errors unmounted).
Choice quality, and a rare proving piece form the second setting. (N.B. The right jubilee line is interrupted at the gutter). Unmounted Mint. SG 192b

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