Harmony “Mayflower” Door Chime

Harmony “Mayflower” tubular door-chime
This chime is from the Harmony Manufacturing Company of Los Angeles, another California company.
This early door chime has a prominent ceramic emblem that looks like the Mayflower of Plymouth Rock fame.
The strikers have leather tips which is usually found on pre-war door chimes.
The mechanism is robust with two wooden knobs for adjusting the distance of the tubes from the striker to achieve the optimum sound.
| Manufacturer | Harmony Manfuacturing |
| Location of Manufacture | Los Angeles, California, USA |
| Date of Manufacture | ~1937 |
| Cover | Painted, stamped steel. Ceramic ornament. |
| Bells | Brass |
| Height | 37 inches |
| Width | 6 7/8 |
| Depth | 3 inches |
| Notes | ElectraChime Collection. Museum example restored. Los Angeles photo also restored. |
I believe I have a Harmony Mayflower chime that needs some repair. It’s in a house built in 1939. Before I begin repairing it I’m hoping you can tell me what voltage it operates at. I suspect it’s 24 volts. Do you know the answer?
Many thanks in advance.