SOUTH AFRICA 1929-31 1s and 2s6d Officials, varieties, SGO10a, O11aSouth Africa 1929 31 1s brown and deep blue and 2s6d green and brown Officials, recess printing, matching lower left corner blocks of 4, each with R10 1 showing printing variety stop after "OFFICIAL", SGO10a, O11a. Very fine mint matching blocks with original gum. The 1s block is unmounted mint. A scarce and attractive pair of positional multiples both showing matching varieties. The 1 shilling stamps feature a black and blue Wildebeest and the 2s6d