 In 1762 therefore the Elector bought the factory from the Hannongs for 40,804 guilders, plus another 10,00 for the arcanum, and installed his own officials to manage it.Frankenthal Porcelain was always hard-paste, as Hannong senior had been in partnership in Strasbourg with an ex-employee of the Meissen factory.It is said that one of his sons sold the secret to Sèvres, although they were unable to obtain the right raw materials for some time.