Manufactured by the Sonora Phonograph Company of NY, NY, approximately 1924. A wooden tabletop speaker meant for connection to radios that had no speaker, such as homebrew units or some of the early "coffin" sets. Consisting of a metal horn connected to a wooden throat, this unit shipped with a high-impedance driver, but was since replaced with a modern 8-ohm PM speaker due to the original driver's winding and diaphragm being in a severe state of non-working decay. Sonora started as a clockmaker, moving into wind-up phonographs, and ending as a radio manufacturer. Like many, the depression probably did them in as they ended production in 1930. Chances are some of their components outlived the company, as many radio manufacturers went into receivership and were purchased by more stable manufacturers. The decal on this one is original, every one of these I've seen has had it in a slightly crooked placement.