Luke Honey Ltd has dated this piece to the 18th Century.

"George the Third...King of Great Britain, France and Ireland &c &c", Myers pinx., R. Purcell fecit., London, printed for E. Bakewell and H. Parker opposite Birchin Lane in Cornhill and R. Sayer at ye Golden Buck in Fleet Street
in original period frame, 43cm x 33cm.
Provenance: Harold Ward Collection
Reference: the same print is in the collection of the British Museum (1902,1011.3722)
Luke Honey Ltd has dated this piece to the 18th Century.
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