1937 N.S.W. Sesquicentenary 2d study of the 'Pantaloon' flaw (L10/2), with early state in mint block of 4 and used (5); advanced state used (3); retouched in mint Ash imprint block of 10 (tone spot affecting variety unit, in used pair and used (5). A scarce assembly. BW 175f,fa,fb (14 M, 12 U)