1916-23 1/2d to 1s (excl. 1 1/2d) on Oswald Marsh cover from Pleasant Island to England, with registration cachet, transit and arrival bs, plus 1s single franking to England sent registered with transit and arrival bs, a fine duo. (Image)

1916-23 Group incl. 1916-23 1/2d to 1s mint set of 11 (3d with ink marks on face), 1/2d yellow-green mint n.h. block of 15, De La Rue 5s mint and De La Rue 5s with "SPECIMEN" overprint (toned gum), fine to very fine group. (Image)

1916-23 De La Rue 2s6d yellow-brown, 5s bright carmine and 10s pale blue, all tied to Oswald Marsh cover from Pleasant Island to England, with registration cachet below, reverse with Sydney, London and Norwood ds, addressee erased, a very fine philatelic franking. (Image)

1916-23 De La Rue 2s6d very deep brown and 5s bright carmine tied to Oswald Marsh cover from Pleasant Island to England, with registration cachet and censored hs, reverse with Sydney and London arrival, very fine philatelic franking. (Image)

1916-23 De La Rue 10s Seahorse mint and used singles, the mint with typical yellowish gum, the used with faint cancel, very fine duo (S.G. £675). (Image)

1916-23 Waterlow Seahorse 5s rose-carmine and 10s indigo-blue in mint n.h. right marginal "SPECIMEN" blocks of four (type GB26), one 5s with small area of natural gum disturbance, very fine and fresh, rare Specimens (S.G. £11'200+). (Image)