GOLD COAST 1951-52 3d black Postage Dues error, SGD6/b

Gold Coast 1951-52 3d black Postage Dues, right marginal block of 6 (2x3), watermark error W9b 'St Edward's Crown' on centre horizontal pair, SGD6/b.

A fine unmounted mint positional piece with full original gum. Unobtrusive pencil mark on right variety stamp, which barely detracts.

A very scarce watermark variety, particularly so in this positional form.

The Stanley Gibbons catalogue value is £700+.

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