Proof essay 1888 (c.) Small Dragon unwatermarked imperf. 3ca., 5ca. and perf. 5ca. each overprinted in red with four Chinese characters, and imperf. 3ca. and perf. 5ca. overprinted diagonally in red "FORMOSA", four are gummed (a little browned). Chan F9-F11, F12, F14. Photo