This Corps, formed originally in 1539, is the 'Nearest Guard' to the
British Sovereign and is composed of former Army officers. Their
helmets are based on the "Albert" pattern for Household Cavalry, a
style they have retained in use for nearly 150 years.
The crown on this particular helmet plate indicates the period
1902-52, and the initials PD may be those of Major General LA Price-Davies, VC,CB,CMG,DSO