Unused on cover / entire letter 1856 (July) and (Aug.) entires registered from Tongnoo bearing 1854 2a., both clearly cancelled "B/181" and showing "TOUNGOO/P.O." and "TOUNGNOO/P.O." double-ring d.s. in red below respectively (both crossed by horizontal filing crease). An interesting pair. Photo

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Unused on cover / entire letter 1856 (July) and (Aug.) entires registered from Tongnoo bearing 1854 2a., both clearly cancelled "B/181" and showing "TOUNGOO/P.O." and "TOUNGNOO/P.O." double-ring d.s. in red below respectively (both crossed by horizontal filing crease). An interesting pair. Photo