Grace's Guide is the leading source of historical information on industry and manufacturing in Britain. This web publication contains 145,057 pages of information and 230,710 images on early companies, their products and the people who designed and built them.
of 143-144 Holborn, London, EC1. T.A.: Wyverndon, London. Telephone: Holborn 4677. (1922)
Ditto Address. Factory: Vulcanite Works, Leicester. Telephone: Holborn 4677. Cables: "Wyverndom, London." (1929)
1896 Company established.
1919 Patent - Improvements in and relating to the filling of fountain pens. 
1922 Listed Exhibitor - British Industries Fair. Manufacturers of every kind of Fountain and Stylographic Pens, Gold Nibs. Speciality: Lever Self-filling Pens. (Stand No. K.75) 
1929 Listed Exhibitor - British Industries Fair. Manufacturers of Fountain and Stylograph Pens, Gold Nibs, Propelling Pencils, over 200 Patterns. (Stand No. R.38) 
1944 Patent - Self-filling fountain pens.