The styca (pronounced [ˈstykɑ]; pl. stycas) was a small coin minted in pre-Viking Northumbria, originally in base silver and subsequently in a copper alloy. Production began in the 790s and continued until the 850s, though the coin remained in circulation until the Viking conquest of Northumbria in 867. The coin's name derives from Old English styċċe [ˈstyttʃe], meaning "piece."