Korea postage stamp: 100 mon Yin Yang
c. 1884
further reading: “Korea’s first modern postal service started in 1884” article via Korea Times
“A sheet of 25 green horse-and-dragon stamps, along with a sheet of a similar design but in red, sold for $1.3 million at auction Saturday in Hong Kong, setting a new record for a set of Chinese stamps.”
c. 1886, “commissioned by the Chinese Empress Dowager in 1886 for Taiwan”
United States tax stamp: Rapid telegram
c. 1881?
revenue tax stamp for a telegram from the American Rapid Telegram Company
engraved by the American Bank Note Co.