Thanks, Parcelpostguy, for your contribution! the stamps are great. Since they show complete traditional costumes, not emphasis on Hairdos and Headdresses, I recommend to post them in the "Costumes" thread so collectors of this theme can also enjoy them.
Rio Muni is the Continental Region of Equatorial Guinea, and comprises the mainland geographical region. Río Muni was ceded by Portugal to Spain in 1778 in the Treaty of El Pardo. It was a spanish province , along with Fernando Po, between 1959 and 1963. In 1968 conquered the independence from Spain.