South West Africa 1918 SA KGV 1d Envelope, Rare Neuheusis Pmk

1918 SOUTH AFRICA USED IN: South African KGV 1d Stationery Envelope used from NEUHEUSIS to Windhuk showing rare despatch cds in violet, censor label and also in violet the circular censor cachet B/100. Arrival canceller 24.7.18 on reverse. Superb, rare & exceptional.