Rare 18th-century English Battersea enamel Anti-Gallican Society badge/plaque, book piece

A rare 18th-century York House, Battersea enamel Anti-Gallican badge/plaque, circa 1750. Transfer-printed in gold, St George is pictured spearing the fleur-de-lis of France, with Britannia above and the British lion and Prussian eagle to the sides. A ribbon below bears the motto “For Our Country”. Gilt metal mount with suspension loop. The badge was probably intended to be hung around the neck on a ribbon threaded through the loop at the top. It would have been worn by a member or official of the Society. 2 of the 3 partners at York House, Battersea, John Brooks (engraver) and Stephen Theodore Janssen, were members of the Anti-Gallican Society. Janssen was Grand President. 

Measurements (of plaque):
Height: 8.2cm (3.25in)
Width: 6.5cm (2.6in)

References: This same plaque is illustrated in English Enamel Boxes From the Eighteenth to the Twentieth Centuries by Susan Benjamin on page 47 (Macdonald Orbis, 1987)

Provenance: With the Halcyon Days collection.

Condition: Hairlines and marks to the front of the enamel (none obtrusive) and to the reverse, where there is also a small chip and marks of sticker residue. No restoration found under examination with ultraviolet light.