cover 1887 (10 Jan.) Perak 1c. stationery card to Penang, cancelled by barred oval and showing rare "THAIPENG/PERAK" oval d.s. (Proud Type D4, the only recorded date) alongside and Penang c.d.s. (crossed by horizontal crease) below

Details
cover 1887 (10 Jan.) Perak 1c. stationery card to Penang, cancelled by barred oval and showing rare "THAIPENG/PERAK" oval d.s. (Proud Type D4, the only recorded date) alongside and Penang c.d.s. (crossed by horizontal crease) below