Octagonal paneled Mason's Ironstone jug, unmarked and likely produced sometime between 1807 and 1813, when the company was still experimenting with its ironstone formula. Charles Mason registered Mason's patent for "the improvement in manufacture of English porcelain" in 1813 and items made afterward were typically proudly stamped with a 'Mason's Patent Ironstone China' mark.
Mason's made these hydra handle jugs in graduated sizes with varying decorative designs, this is a mid-size example that is 5 1/2 inches tall, 4 1/2 across at widest portion of the jug with a 3 1/2 inch base and it is 5 inches across spout and handle. The deep Mazarine blue ground is decorated with fanciful gilt designs on alternating top and bottom sections of five panels, with gilt edges on rim and handle.
Very light spots of wear to gilding of the rim but the gold overall is in remarkably pristine condition overall, as is the body of the jug which has no chips or cracks. There is a manufacturing flaw on the interior wall about 1/2 inch down from the rim which is illustrated.
It is difficult to see and picture, but a raking light reveals a potter's fingerprint that was left on the surface of the base, shown in small inset picture.
Considering the jug is over 200 years old its wonderful condition is a testament to the truly resilient nature of Mason's Ironstone formula.