Standard Bank of South Africa Limited, colour trial 5, undated (c.1900), purple and mutlicolourd, statue of Van Riebeck, Britannia at right, value at centre and at each corner, rev. red, Africa at centre, branch offices at left and right (PS.423 for type), official perforations, blue Waterlow seal, red SPECIMEN NO VALUE overprint, good extremely fine, attractive, very rare