Undoubtedly a unique piece, and probably the work of a young girl, this unsual hand stitched Royal Standard dates to the early 19th century.
The Royal Standard in this form was adopted on the accession of Queen Victoria in 1837. That year, the arms of Hanover were removed from the Royal Standard because the kingdom applied Salic Law (the throne could not pass through the female line), and Victoria's uncle, Ernest Duke of Cumberland therefore succeeded as its ruler.
This was probably made as part of the celebrations at the accession of Queen Victoria.
Whilst some of the stitching to the lions and harp is fraying, and there is a small tear near the lion top right, the standard otherwise survives in excellent condition.