Bechuanaland SG73/82s R/Cypher Set (no 1 1/2d) Opt Specimen in U/M Blocks

Bechuanaland 1913-24 original set of 8 to 1/- (lacking the 1 1/2d which was issued later) watermark Simple Cypher overprinted SPECIMEN (type GB23) blocks of 4 (the 6d and 1/- are marginal) SG73/82s. Very fine and fresh set unmounted mint with full original gum. 1/2d Creased and slight separation otherwise fine and fresh. A rare set the 1/2d to 6d not distributed by the UPU. With less than a single pane (120 stamps) of each values released by the BPMA (Although the 1/- value was distributed by the UPU with the same Specimen opt no blocks could exist from that source)