Miniature “Chime-ette” Door Chime

This is the smallest known true door chime that rings a true ding-dong melody on two xylophone like tone bars. It’s diminutive size allows it to be mounted with virtually the same footprint (wallprint?) as a doorbell or buzzer. The instructions on the back read:

Connect this Chime-ette in place of your doorbell. Operates on regular bell transformer. Mount on walls with bars in vertical position.

Location of ManufacturerUnknown
Date of ManufactureEstimated 1930s
MaterialsStamped and painted steel. Silk-screened musical notes. Wood striker.
Dimensions3 1/8 inches wide, 4 3/8 inches tall, 1 inch deep.