cover 1900 (12 Jan.) XU5 to Nigel, marked "Veld Dienst", showing light oval "MOUNT PROSPECT" rubber d.s. in violet (the "Z.A.R." missing at foot) with, on reverse, Volkrust and Heidleberg transit c.d.s.; the XU5 with some light discoloration and ironed-out central vertical crease. Scarce. Photo