the rectangular plate with an arched top, cast in relief with an armorial flanked by a wyvern and a lion supporting, the shield centred by a rose and with a coronet surmount,

This fireback has been re-cast as a number of variants. The original castings originated at the kent/Sussex Weald foundries, an example is held at Hastings Museum. See: Jeremy Hodgkinson “British Cast iron Firebacks”, Hodgersbooks, 2010 p.150