Steingutfabrik Franz Anton Mehlem / Steingut-Fabrik und Kunsttöpferei F.A. Mehlem, Inhaber Franz Guilleaume
"Royal Bonn" Coblenzerstraße 81, Bonn. North Rhine-Westphalia. Hersteller / Manufacturer. Mehlem's new factory was founded in 1840. "Royal Bonn" trade mark was used from 1890 - 1920. Franz Guilleaume born 20th September 1848, in Köln - died on 3rd January 1914, in Bonn. The business was purchased by Villeroy & Boch in 1920. The factory was closed in 1931. Reference: Porcelain Marks & MoreBonn Adressbuch 1902Other AddressbooksMore Addressbooks
Stein shown complete with marks immediately underneath.
Impressed roundel mark, plus ink stamped tower mark,
together with decoration number & decorator signature.