That is a sweet treasure chest.

This may have been used with it..

Model: Loud Speaker 1-A (1A)
Manufacturer/Brand: Stromberg-Carlson Co. , USA
Year: 1924 Type: Loudspeaker/Horn
Power type and voltage: No current needed

Model: Loud Speaker 1-A (1A) Dimensions (WHD) 180 x 40 x 155 mm /
7.1 x 1.6 x 6.1 inch
Price in first year of sale 17 USD
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No further information on
Loud Speaker 1-A (1A) (Stromberg-Carlson Co. , USA)
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http://www.radiomuseum.org/dsp_pictu...Model_Id=97409