This is a Lot of MNH/USED South West Africa 1983 (8 June) Discoverers of Diamonds Commemorative Issue consisting of---- Single Set of 4, 1st Day Cover # 41, 4 Control Blocks of 4 and a Set of 4 Full Sheets of 10, Multicolored 10c, 20c, 25c, 40c   No Watermark. Finish very good.