The factory at Worcester was opened in 1750-51, contemporaneously with that of Derby, the old mansion of Warmstry House being the first seat of the works. The latter passed into various hands, but were instituted by Dr. Wall, a physician, and Dr. Davis, an apothecary. The excellence of the colouring was a feature of manufacture, and it reached its highest degree of perfection from 1760 to 1780. Imitations from Chinese and Japanese designs were chiefly in vogue, enamelled, painted, or pencilled on the glaze, or in blue under it. Amongst the early marks distinguishing the Worcester porcelain, there is a "W" standing both for Worcester and Wall, the sign of Esculapius, a "W" enclosed in a square, and one formed of two "V's" intersecting each other, besides outlined crescents in gold or blue, fretted squares, anchors, and names. It may here be observed that according to general opinion no figures have been produced at Worcester. [Illustration] [Illustration] In the second period of the Worcester manufacture, under Messrs. Flight & Barr, 1783, the name "Flight," or that name with a crescent, distinguished the work, and likewise "Flight and Barr," surmounted by a crown; and then with initials. The Chinese, Chantilly, Dresden, and Sèvres marks were also borrowed, but the exact date of their adoption does not appear to be decided. [Illustration] Robert Chamberlain, apprentice of the old Worcester factory, took up a separate business with his brother Humphrey, and Messrs. Kerr & Binns succeeded them, and employed the marks here following. One consisted of four "W's" enclosed within a circle; three initial letters, and a shield bearing initials and the name "Worcester." [Illustration] A third factory has been instituted by Chamberlain's nephew, Mr. Grainger, in partnership with Messrs. Lee & Co., under whose names the present Worcester china is executed. The original founder, Dr. John Wall, died at Bath in 1776. In 1783 Mr. Flight purchased them, and took Binns into partnership, Solomon Cole, and Baxter. Amongst other names connected with the Worcester works are Blaney, Davis, Holdship, whose name, "R. Holdship," appears on some examples, and "RH" united as a monogram, as also a "B" for Binns. There are some fifty-seven workmen's marks on this china, which are too numerous to give, mostly of a very insignificant character. A large "W" (capital letter) is rare. Sometimes a square Chinese seal may be found on a specimen by no means oriental, and this is accounted for by the painting of such a mark on the paste before the glazing or the decorative design was executed or perhaps decided upon by the artist. [Illustration]