細節
1912 overprinted by Shanghai Commercial Press varieties comprising 1c. marginal pair with overprint misplaced resulting in one stamp having overprint omitted, 1c. overprint inverted, 1c. overprint double all mint, 1c. with second character faintly registered mint (in pair with normal) and used, and 2c. with overprint inverted used; also Statistical Dept. 4c. (3) with poorly registered overprints and 1898 Waterlow $1 to $5 mint file proofs with security punch holes. Photo for 2c.