British Central Africa, 1897, Arms of the Protectorate, 1d on 3s Black & Sea Green, Surcharge Double, top margin single, o.g., very fresh with bright colors, exceptional centering, Extremely Fine, a handsome mint example of this surcharge error; with 1976 B.P.A. certificate. Scott No. 57c. SG No. 53c  £750 ($1,070). $0 (Image)