O 3" c.d.s. (possibly at Pishin at this time); small faults though an unusual pair from the Baluchistan border dispute period" /> cover 1885 (20 Dec.) ½a. envelope to Karachi cancelled with rare "FIELD FORCE" 25mm. c.d.s. with words across the centre, and 1886 (21 Mar.) ½a. envelope to Cannanore cancelled by "FIELD P.O./N<V>O 3" c.d.s. (possibly at Pishin at this time); small faults though an unusual pair from the Baluchistan border dispute period | Christie's