1796, Azores (Portuguese Administration), Maria I. Copper 20 Reis Coin. Mint Year: 1796 Reference: KM-3. Denomination: 20 Reis Material: Copper Weight: 11.69gm Diameter: 34mm Maria I (December 17, 1734 – March 20, 1816) was Queen of Portugal and the Algarves from 1777 until her death. Known as Maria the Pious, Maria the Mad, she was the first undisputed Queen regnant of Portugal. Sh ...