A pair of large copper electrotype reliefs...

A pair of large copper electrotype reliefs depicting siege warfare of the late 17th century, each circular 360mm, one with a scene of equestrian officers directing artillery against a star fort situated on a peninsula, cannon firing between fascines, saps approaching the walls of the fortress, houses and spires within, a warship in the waters to each side; the other similar, with mounted officers and foot gunners to the foreground, mortars firing beyond them to the right and a star fort on the left; in glazed frames. [2]