This is the vintage Royal Doulton Character Jug from Williamsburg: "Guardsman" (Model D6568 for the large size, or D6575 for the small size), designed by Max Henk and produced starting in 1962 as part of the Williamsburg collection.

The value depends directly on the size of your jug. Because these were mass-produced in large quantities for roughly 20 years, they are widely available and hold a modest collector value. Based on recent transactions across marketplaces like eBay and Etsy:

• Large Size (D6568, 7.5"): Typically sells for $30 to $50. Exceptional, pristine pieces with original tags can sometimes approach $80–$100, while those with minor chips or crazing drop below $20