The arms of Lieutenant Philip Mountbatten R.N., as at present arranged. The exterior ornamentation is subject to alteration in the event of a title or order being conferred. Lieut Philip Mountbatten's Coat Of Arms - LT. Philip Mountbatten's coat of arms. The design bears the arms of Princess Alice, Lieut. Mountbatten's grandmother over all in the first quarter, on the arms of Denmark and Greece, and the lion of England gorged with a naval crown. The crest has five ostrich features derived from the Carisbrooke and Mountbatten arms. November 24, 1947.