1955 3½d Y.M.C.A. presentation die proof in issued colours in sunken frame, with Note Printing Branch cachet on reverse endorsed '20/6.7.55' (for W.L. Russell, Stamp Advisory Committee), superb. Despite the Brusden-White note, the red triangle on this proof appears to be printed and not handpainted. Eight die proofs were prepared, one of which is in the Royal Collection. BW328DP(12), cat AU$3000