This block has never been on the market previously. A unique block of 13 purchased at a post office in 1981. The lower three stamps have small traces of the gold. There were six others purchased at the same time of which two were creased and one had a thin. These were sent to Stanley Gibbons for inclusion in the Part 1 catalogue and auction and have been catalogued ever since. The receipts for the items sent to SG in 1982 are included. SG 285aa catalogues at £19500 ++. SACC 290f catalogues at R715,000 +++ All the stamps are superb unmounted mint - price includes VAT for South African buyers. Non South African buyers please deduct 15% . Mailing cost will be quoted on.