The form of the present mortar is identical to that used by Abraham Rudhall I, of Gloucester (c.1680), who was a staunch Royalist. The ornamental devices are extremely similar to the enamelled bosses found on pewter chargers of the period, and may have been cast from such a pattern.
A similar mortar was sold in these rooms, The John Fardon collection, Christie's South Kensington, 1 May 1996, lot 219, and later resold in Christie's Great Rooms, A Collection of Important Early Oak Furniture and Metalware, The Manor House, Bramcote, Nottingham, 24 May 2001, lot 343.
Peter Hornsby, English Decorated Mortars, Collector's Guide, January 1990. It is uncertain whether these mortars cast with the Arms of Charles I predate the Civil War, it is possible various founders cast them after the Restoration.