It is fully marked on the base with the Grainger & Co. (Worcester) stamp, which I believe dates from 1850 to 1875.
Antique Royal Worcester China Works Trefoil Posy Vase Grainger & Co 1897
Grainger & Co Royal China Works Worcester Porcelain Vase, 1885 2 1/8"
Antique Royal Worcester China Grainger & Co Feathered Hat Candle Snuffer 1876
GRAINGER & CO ROYAL CHINA WORKS - WORCESTER - FLUTED BOWL 204
Antique Grainger Lee Worcester Hand Painted Cabinet Plate Cork Prison Ireland
Antique Locke &Co Worcester Miniature Jug Hand Painted With A Robin And Flowers
