SWAZILAND 1962-66 3½c yellow-green and deep grey, variety, SG94w
Swaziland 1962-66 3½c yellow-green and deep grey, variety WATERMARK INVERTED, block of 10 (2x5) being the first two columns of a sheet with full margins and imprint, SG94w.
A very fine unmounted mint positional block with full original gum. Slight bend but scarce in this positional form.
The Stanley Gibbons catalogue value is £100+.