Mussan Velodog

 MUSSEN-LALLEMAND Jacques, manufacturer of revolvers, street Pied du Thier, 51 in Liege (BE 1908/1914 then after war 1919/1952) The Velo-Dog was a pocket revolver originally created in France by René Galand, son of Charles-François Galand in the late 19th century as a defense for cyclists against dog attacks. The name is a compound word composed of "velocipede" and "dog". Wikipedia Wiki ref