1880 Wmk Crown CC 48c Brown mint hinge remainder, very fine (SG £1’500) (Image)

1898 Wmk Crown CA 96c grey-black surcharged “1 DOLLAR” only (no Chinese characters), mint hinge remainder, average condition (SG £2’750) (Image)

1947 International Reply Coupon in proof block of four, this being the unique example in private hands, presented to Eugene Thomas at the 1947 UPU Congress in Paris, showpiece (Image)