South Africa 1926 6d green and orange "Orange Tree" Official, overprint type O1 (with stops), SGO4.
Wonderfully presented in a block of 4 of the first printings of Government Official stamps from South Africa (Pretoria printing).
A good quality used block of four with a pleasing and interesting central slightly doubled 'ROSEBANK CAPE' circular date stamp.
The "Orange Tree" design is one of the most popular of the Union of South Africa stamps.
Stanley Gibbons catalogue value: £150.