U5 1891 (10 Apr.) U5 (slightly cut down at left) to Bindjei, Sumatra, bearing 1887-92 5c. slate pairs (2) tied by violet firm's h.s.and cancelled by oval of bars, showing clear "SANDAKAN" c.d.s. in red with, on reverse, Singapore, "N.I. AGENT SINGAPORE" and Medan transit c.d.s. Photo