Mafeking Siege 1900 SG16, 2/- on 1/- with Cert, Only 570 Ovptd

1900 2/- on 1/- green of British Bechuanaland, Type 2 Overprint (SG 16). VF/U example on neat piece. With Mafeking cds MY 2 1900. An elusive stamp - only 570 ovptd! Photo-cert & Signed: Brandon. (cv£650). See image of certificate below.