Worcester porcelain is perhaps the oldest British porcelain manufactory. It was started by Dr. John Wall in 1751. Thomas Flight took control in 1782 and took in Martin Barr as a partner. After Flight's death, his son and the two sons of  Barr continued the business. They marked their production with a variety of marks, in particular an impressed B F B and a crown,  identifying the Crown warrant they were granted by George the Third. The crown insignia identifying Royal Worcester to this day.
The shell designs decorating this coffee can was produced by a sophisticated transfer system. Beginning with a stipple engraved copper plate used to print the design on a piece of paper with linseed oil. The linseed oil image was then applied to the glazed pot and a black pigment was lightly dusted on to the pot, the pigment adhering to the oil and the pot then fired. The process was known as "bat printing" after the colloquial name for the transfer paper.
The gold decoration was applied by the Bright Gold process. A solution of gold sulphoresinate and mercury was used as a pigment. The mercury being driven off when the pot was refired.
Height 65 mm. (2 3/8 inches).
Impressed markings.
Excellent condition.