cents" on 16c. chestnut and ultramarine (die II), variety surcharge double (close together), fine used. B.P.A. Certificate (1983). S.G. 19b, £700. Photo" /> used 1893 (Jan.) "15/<I>cents"</I> on 16c. chestnut and ultramarine (die II), variety surcharge double (close together), fine used. B.P.A. Certificate (1983). S.G. 19b, £700. Photo | Christie's