n", dated "1 OCT 79" and further marked "Vol. 4. folio 129". Photo" /> essay 4d. handpainted essay in bright orange with lettering picked out in Chinese white, executed on tracing paper (72x94mm.) with a De La Rue dummy stamp, in colour to be achieved, mounted below and marked<I> "Colour I Verm<V>n"</I>, dated "1 OCT 79" and further marked<I> "Vol. 4. folio 129"</I>. Photo | Christie's