at Cedros, Marked "O.H.M.S." at top and "Harry Hughes, Warden" at lower left, showing "21" obliterator (Type 4) with, on reverse, fine "21" c.d.s. Photo" /> cover 1870 (14 May) envelope, with contents, addressed to<I> "The Acting Colonial Secretary"</I> at Cedros, Marked<I> "O.H.M.S."</I> at top and<I> "Harry Hughes, Warden"</I> at lower left, showing "21" obliterator (Type 4) with, on reverse, fine "21" c.d.s. Photo | Christie's