"Chiniborazo", marked lightly in pencil "Subject to the word Revenue being inserted". Unique. Photo" /> essay 1891-96 Post Office Competition essay for ½d. wrapper, 2½d. and 5d. stamp-size pen and ink drawings with simulated perforations, executed on paper inset on card (185x136mm.) numbered "14" and entitled<I> "Chiniborazo"</I>, marked lightly in pencil<I> "Subject to the word Revenue being inserted"</I>. Unique. Photo | Christie's