Sao Thome E Principe monetary unit is the official currency used in the island country of Sao Thome E Principe. However, there are several synonyms that refer to this currency unit, including the Sao Thome E Principe dobra, the STN, and the dobra. All of these synonyms represent the same currency, which has been in circulation since the country gained its independence in 1975. The Sao Thome E Principe dobra is a relatively stable currency and has been used for all transactions within the country. While there are no significant changes expected in the value of this currency unit, its synonyms remain vital in describing and identifying it for business and trading purposes.