1907 OHHS 5pi deep grey, mint nh imperforate block of four, fresh, very fine and scarce (Image)

1922-23 O.H.E.M.S. 2m and 4m mint nh pairs with inverted overprint, 4m rejoined with some faint gum toning, both signed Hass and very scarce (Nile Post US$1'000) (Image)