"stamped" but showing a legible strike of the "UNDERSTAMPED BEARING" double ring h.s. in red; both instructional h.s. are associated with the Delhi Field Force" /> cover 1857 (7 Sept.) envelope from Cawnpore to Major Robertson, Rawalpindi, bearing 1a. red (cut small) tied by the experimental diamond of bars, showing faint "MISSENT FROM" double ring h.s., and 1857 (7 Nov.) stampless entire letter from Delhi to Kussowlee, annotated<I> "stamped"</I> but showing a legible strike of the "UNDERSTAMPED BEARING" double ring h.s. in red; both instructional h.s. are associated with the Delhi Field Force | Christie's