About This Phone
This phone was likely manufactured by S.I.T. (Société Industrielle des Téléphones), which was the primary manufacturer for the French government at the time. In the 1890s, the French government began a strict "standardization" process. They contracted private companies like S.I.T., Marti, and Mildé to build phones to a specific government blueprint. Because they were built to a "State" design, the manufacturers often didn't put their own names on the front—instead, you'd just find the PTT logo or a serial number.