Ceitil Público Deposited
also called Real Preto, the earliest copper coin of Portugal, of the value of one-sixth of the Real, first issued by Al- fonso III (1248-1279). It has usually a castle with three towers occupying a large part of the field, and was extensively struck at Lisbon, Porto, and Ceuta. The latter town in Northern Africa is sup- posed to have supplied the name of the coin.
- Frey's Dictionary (American Journal of Numismatics, Vol. 50, 1916)