SG20. 1900 (3 May).
Locally addressed printed "MAFEKING AUCTION MART" envelope, bearing superb used 3d. Deep blue/blue. "ALFRED & ROSS/Auctioneers and Sworn Appraisers,/Stationers, etc.,etc.,/MAFEKING" printed on the envelope flap.
David Brandon Certificate.
Very Rare and Attractive.