Unused on cover / entire letter 1856 (12 Feb.) and (30 June) entires bearing 1854 1a. (the former defective) tied by manuscript "Stamped", cancelled by diamond of dots and "B/181"? obliterator with "TOUNGOO/P.O." and "TOUNGNOO/P.O." double-ring d.s. in red on face respectively

Details
Unused on cover / entire letter 1856 (12 Feb.) and (30 June) entires bearing 1854 1a. (the former defective) tied by manuscript "Stamped", cancelled by diamond of dots and "B/181"? obliterator with "TOUNGOO/P.O." and "TOUNGNOO/P.O." double-ring d.s. in red on face respectively