on 3 annas, initialled "A.B.", used with "MOMBASA/A/MY 27/91" single circle datestamp; small age stain and pinhole; scarce. Clear B.P.A. Certificate (1966). S.G. 24, £1,200. Photo" /> used <I>"½ Anna"</I> on 3 annas, initialled<I> "A.B."</I>, used with "MOMBASA/A/MY 27/91" single circle datestamp; small age stain and pinhole; scarce. Clear B.P.A. Certificate (1966). S.G. 24, £1,200. Photo | Christie's