Goss China Factory Beaker (Early First Period) with the crest of Cadwgan, First Lord of Nannau. 78mm high.
First Period Goss China, manufactured between 1858 to 1887. W.H. GOSS was the trademark used by William Henry Goss, Falcon Pottery, Stoke, Staffs, UK. [Source: Page 8. The Concise Encylopaedia And Price Guide To Goss China, Nicholas Pine, 2000, Milestone Publications]
Scan and Information Courtesy of eBay.