Brief History of the Marque
Manufactured by Motorradwerk Matthäus Graf Thun (MT), Vienna 1925-1935
Using engines from Villiers, JAP, Blackburne and MAG, motorcycles were built along English lines in capacities of 147cc to 497cc, along with a 750cc V-twin JAP. The Villiers engines included the famed 344cc twin and a 247cc watercooled single. It is said that some of the machines were badge-engineered Sun models.
The firm was quite active in competition.
Count Mathias Thun was known in Paris for his involvement with the French marque La Préféré in 1914 - see French Marques (L).
Sources: GTU Oldtimerservice, Tragatsch p222