This vase appears to commemorate the Act of Union, when, in the reign of Queen Anne, England and Scotland were fully united to form Great Britain in 1707. Although the Irish harp is also shown on the vase, Ireland did not join the union formally until 1801. The fleur-de-lys composed of tightly scrolling foliage appear to be a discreet assertion of the English Monarchy's claim to France dating from the time of the Plantagenet Kings and the Hundred Years War.

Lambertus van Eenhoorn bought De Metaale Pot pottery in 1691 after the death of the previous proprietor, his first cousin Lambertus Cleffius. The purchase was secured by his brother-in-law, Adrianus Kocx, the owner of the Greek A pottery. Lambertus van Eenhoorn was known for his extravagant spending, and he made a series of expensive trips abroad, including visits to Scotland and Ireland. It is possible that one of these trips aided the commissioning of this vase.