The Crimean war was fought between October 1853 and February 1856 on the Crimean peninsula in Ukraine between Russia and the allied forces of France, Britain, the Ottoman Empire and the Kingdom of Sardinia.
There were certainly Crimean War commemorative transfer printed china pieces produced in the north-east of England. The main symbols found on them are: flags of the various allied nations, the Star and Crescent (representing the Ottoman Empire), the British lion, and the French eagle.
The symbolism of the decoration on the glass tankard is, therefore, appropriate for a Crimean War commemorative (putting a possible date at 1853 to 1856ish) and the tankard has the appearance of a Victorian commemorative piece.
Even if not commemorative of the Crimean War conflict per se, there were a whole series of Anglo-Ottoman alliances from the 1830s (brokered by Palmerston) right through until the early 1880s (perhaps matching the dual symbols of just the British lion and the Ottoman star and crescent) that might have been thought worthy of commemoration.
Pressed glass production had spread from America to Europe by the 1830s, and was well established in Britain and France by the 1840s. There are well documented commemorative glass pieces celebrating Queen Victoria’s accession in 1837 and Prince Albert’s death in 1861, so British or French pressed glass commemoratives of the Crimean period are perfectly feasible.
Early British-themed pressed glass commemoratives tend to be comparatively crude, with an easily-pressed shape (a plate or a dish for example), and some kind of easily-moulded profile or text, rather than the sophisticated shape and elaborate relief-moulded symbolism of this tankard, though Roy Jones shows a sophisticated, relief-moulded tankard commemorating the opening of the High Level Bridge, Newcastle-on-Tyne in 1850 that is “though most likely to have been made by Sowerby in the 1850s” at
http://www.glassmessages.com/index.php/topic,53261.0.htmlIf your tankard is, indeed, British and Victorian, then I think that the most likely manufacturer in that case would be one of the north-eastern British glass works, but I known of nothing with the same symbolism from the area at that time.
As the tankard is owned by a family in Jersey, perhaps a French connection might be worth pursuing. Hajdamach ( page 14, “British Pressed Glass 1840-1914”) states that even “in the early 1840s, the French glass forms of Baccarat and Saint Louis were making crisply modelled tableware in imitation of American pressed lacy patterns”.
Fred.