White note, C4, at the centre of the piano keyboard, indicating the division between left- and right-hand regions and between the treble and bass staves of printed music. Middle C is also the pitch indicated by a C clef, for example, for viola.
The Pillars of Hercules represent the promontories of Gibraltar and Ceuta. The shield represents the regions of Castile, Léon, Aragón, Navarre, and Granada. Effective date: 18 December 1981.