A George III jigsaw or "dissected puzzle" by J. Wallis Jnr. and J. Wallis Snr.

A George III jigsaw or "dissected puzzle" by J. Wallis Jnr. and J. Wallis Snr., 1807 "Harvest House, Representing the Progress of Wheat", fifty seven partly interlocking pieces (complete), printed paper mounted on maple board, 18 1/2" x 15 1/2", later framed