Telephone bells - Silvered bronze - Antique Phone Ringtone

Antique period doorbell/ringer, a evocative part of a telephone apparatus dating from the 1920s/1930s of the 20th century. At the center of the structure, beneath the two chrome bells and the striker, are two copper coils wound with green insulated wire; at the back, a wooden base and a double metal label reading "induttore" and "pila".
The winding seems well intact and free of burns, the striker is free and oscillates between the two bells, the ringing produced manually yields a very lively "Drinn...", but it can also be powered using a modern transformer.
Descriptive accompanying images; shipping is meticulous.