Northumberland Hussars gold regimental sweetheart brooch

A very rare fine quality brooch, the reverse of the badge impressed '9ct' (9 carat gold) and to the bar 'silver', with maker's details 'SB&S Ltd'. (S.Blanckensee & Sons Ltd). Very good condition, original pin fittings, no damage to the enamel. Width 51mm. Height 19mm.