or "Appd for colour" and variously dated. A unique group" /> Proof COLOUR TRIALS: 1d. in violet and 1½d. in scarlet, both perforated, and imperforate 1½d. in Venetian red, all three affixed to pieces marked<I> "Appd"</I> or<I> "Appd for colour"</I> and variously dated. A unique group | Christie's