M55 – Cape of Good 4d pale blue of 1865 on large piece with King Williams Town & Grahams Town Cape Colony cancels

Cape of Good. Early, large piece with 4d pale blue of 1865. (Must have been special, otherwise a 1d stamp would have done). Pale red oval despatch cancel from King Williams Town 4 My 1866 over which is the receiving cancel of Grahams Town, Cape Colony My 5 66. The cancels would have been on the reverse of the envelope.

Please see photographs.