Zanzibar SG160var 2 1/2d a SHEET with the First Vertical Row NO WATERMARK

1896 (Dec) 2 1/2a bright blue and red wmk single rosette complete sheet of 60 (6×10) showing misplaced watermark which leaves the first vertical row WITHOUT WATERMARK (confirmed by watermark cross in margin above R1/1) brilliant o.g. (mounted on five stamps only). Odd trivial blemishes but a rare and lovely item.