This is a replacement transmitter horn for an antique Kellog Candlestick Telephone from the 1920s.
This should also fit antique wall-phones of the period.
The last photograph shows the original damaged horn at the left, and two 3D printed replacements.
KellogMouthpiece_Metric_V2.stl | 18.1MB | |
KellogMouthpiece_Parametrized_Metric.scad | 2.9KB | |
listFunctions.scad | 182.0B |