ducal coronet
Crowns are frequently observed in Heraldry Understanding Signs & Symbols – Heraldry, S. Oliver & G. Croton, Quantum, London, 2013, P184, but we should not make the mistake of assuming that these are always on Royal arms The Symbolisms of Heraldry, W. Cecil Wade, George Redway, London, 1898 P138. Many of the orders of nobility across Europe were entitled to wear crowns and coronets, Dukes, Earls, Viscounts and Barons in England each had their own distinctive headwear A Complete Guide to Heraldry, A.C. Fox-Davies, Bonanza (re-print of 1909 Edition), New York, 1978, P350. The ducal coronet is an example of this, being gold with a brim of strawberry leaves and a cap of crimson velvet. A Glossary of Terms used in British Heraldry, J.H. Parker, Oxford, 1894, Entry:Crown It may also be the case that a crown is added to an existing coat of arms as an augmentation in recognition of some service to a King Boutell’s Heraldry, J.P. Brooke-Little, Warne, (revised Edition) London 1970, P 187.