S??o Tom?? and Pr??ncipe dobra. The dobra is the currency of S??o Tom?? and Pr??ncipe. It is abbreviated Db and is divided into 100 c??ntimos. The first dobra (STD) was introduced in 1977, replacing the escudo at par. Due to past inflation, on 1 January 2018 the dobra was redenominated at a rate of 1000 to 1, and given the new ISO 4217 currency code STN.