"Appd", initialled and dated "9/4/29", pencil notation on reverse "Approved by H Downey 9/4/29 Before hardening". Photo" /> Proof 2/6d. in red on wove lined paper (72 x 102mm.) handstamped "57", marked<I> "Appd"</I>, initialled and dated<I> "9/4/29"</I>, pencil notation on reverse<I> "Approved by H Downey 9/4/29 Before hardening"</I>. Photo | Christie's