WW1 Royal Naval Air Service officers style 9ct gold RNAS sweetheart brooch

A very rare superb example of a First World War period 'Royal Naval Air Service gold brooch' designed on the style of the officers bullion cap badge worn between 1914 and 1918, the reverse impressed '9ct' (9 carat gold) and maker's details 'H.T'. Very good condition, complete with original pin fittings.
Height approx 28mm.

Code: 14576