Lot 458, China 1967 Thoughts of Mao in two strips of five, VF with CTO postmark September 1, 2020 by Sparks Auctions Lot 458 People’s Republic of China #943a, 948a 1967 Thoughts of Mao Strips of Five, with both colours, each used with CTO postmark and with sheet margin at top and left, very fine. Scott U$1,375.