Dear Annie,

Thank you for the request. The presented object is a so-called" Westerwälder Flachkanne" or "Westerwald Stein" with the measurements of 12.5 x 7.5 inches. These type of stoneware ceramic was common in the 17th century. This is a reproduction from the 20th century made by the company Simon Peter Gerz in Germany, which was founded in 1862 and specialized on historism stoneware.
An estimation would be between 200 to 300 USD.
This estimation is based on actual recent past recorded auction sales of comparables. Retail "asking prices" can be higher and vary.

With best regards,
Georg