A denomination is- sued in 1843 and 1845 under Maria II of Portugal for Mozambique. It consisted of an oblong bar of silver, bearing on one side an M,and on the reverse ONCA -- 6 CRS (Cru- zados). The piece is also known as Pataca (q.v.). See Teixeira de Aragao (xiv. 4), and Fernandes (p. 333).
Source: Frey's Dictionary (American Journal of Numismatics, Vol. 50, 1916)