and "B. Rosa" in pencil on reverse, a little rubbed or soiled and with adherences on reverse from mounting, otherwise fine and rare" /> essay 1872-73 unissued 9d. die proof in magenta, with blank corner square and plate number circles, on glazed card (60x92mm), inscribed number<I> "4"</I> and<I> "B. Rosa"</I> in pencil on reverse, a little rubbed or soiled and with adherences on reverse from mounting, otherwise fine and rare | Christie's