https://www.traditionrolex.com/43
1916 Téléphone de Campagne TF1ou 2 Bruxelles
English Translation
Historique Voir ICI
History Click HERe
Field telephone with magneto signaling made by N.K. Geissler and Co., Saint-Petersburg, Russia, between 1912 and 1914.
https://www.traditionrolex.com/43