"Automatic Synchrophone 1900"
AUTOMATIC SYNCHROPHONE system H. GENTILHOMME MATHELOT and GENTILHOMME builders electrician..... 128 rue du bois Levallois-Perret direct current N°: 175 This is a synchronizer for cinematograph and phonograph circa 1900 in wood and brass. The rear door is missing and I cannot say if the mechanism is complete 38 x 43 cm,