Coat of arms of the Spanish Monarch with the collar and mantle of the Order of Charles (Spain)House of Bourbon. 2nd design of the mantle adopted on 10 October 1789 and fall into disuse since 14 April 1931.
Ceballos-Escalera y Gila, Alfonso (2017) The Royal and Distinguished Spanish Order of Charles III. Madrid: Boletín Oficial del Estado
Heralder