Ceitil - João II Group 6 - Long low outside wall with battlements

João II's ceitis inherited a denomination that had existed since at least the reign of Afonso V, functioning as the lowest-value coin in circulation and the primary means by which ordinary Portuguese transactions were conducted. The castle design variants used to distinguish these issues — of which this Group 6 is one, characterized by its long low outer wall with battlements — were not decorative choices but practical die management, allowing mints and later collectors to sequence production chronologically within a reign.

João II ruled during the critical opening decades of Portuguese oceanic expansion; ceitis of his reign circulated alongside the first systematic returns from West African trade routes.