1958, Heroes Monument, souvenir sheet of 8f scarlet, pin-point paper inclusion invisible from the face, otherwise flawless quality, no gum as issued, NH, VF, C.v. $240 (Image)

1969, Yangtze Bridge, 4f-10f, complete set of four, perfect quality, no gum as issued, NH, VF, C.v. $102 (Image)