Steel pen holder with an individual vaccination pen after Marechal. Blanzy, Poure et Cie., Boulogne-sur-Mer, early 20th century. NML Medical Museum, N 518. In the early 1840s, Pierre Blanzy, a director of a carrier company in Boulogne-sur-Mer, visited several pen factories in England and upon return in 1846, together with Eugene Poure (a math professor) and others. founded a factory in Boulogne producing several models of pens. From the 1890s he began manufacturing vaccination pens marked Le Jenner. The company merged with the British pencil producer Gilbert & Cie. Photograph by Veronika Löblová