on 2 annas, initialled "A.D.", used with "MOMBASA/A/MY 2/91" single circle datestamp. R.P.S. Certificate (1970). S.G. 22, £1,100. Photo" /> used <I>"½ Anna"</I> on 2 annas, initialled<I> "A.D."</I>, used with "MOMBASA/A/MY 2/91" single circle datestamp. R.P.S. Certificate (1970). S.G. 22, £1,100. Photo | Christie's