This is a rare larger size and highly collectable salt glaze / stoneware jug - made by Stephen Green of the Imperial Pottery in Lambeth, London.
It is a large size for display measuring 7 inches in height - with a width of about 6 1/2 inches and a depth of 7 inches.
The jug, of course, takes the form of the bust of the French Emperor, Napoleon Bonaparte.
He is shown wearing his bicorn hat - with a French cockade on the front. The handle is most unusual taking the form of an Imperial Eagle.
The base is impressed with a cartouche containing the name "Stephen Green", as photographed.
Given this jug dates to around the 1840s or 1850s, it is in remarkable condition. There is a little indentation on the top of his bicorn hat - but I think that this might be a mould flaw as identical blemishes appear in exactly the same place on other 7 inch Green Napoleon pieces that I have seen.
The larger sizes of these jugs (7 inch models and 9 inch ones) are very hard to find and command premier prices.
These caricature jugs of Napoleon and his advisory, the Duke of Wellington were very popular in the mid 19th century, and they were also made by other Lambeth potteries, such as Doulton.
My price for this lovely jug is certainly a fair one, given its age and relative rarity.