Circular receptor hearing device, ca. 1875
Black metal circular receptor trumpet with large mouthpiece opening with circular grillwork separated into 6 pie shaped sections. One angled metal earpiece. The tube is adjustable so that the user can angle the mouthpiece toward the source of sound.
1.3 ft. long, 6 in. wide
https://beckerarchives.wustl.edu/VC703-B14-i703019
VC703-B14-i703019
The collection is open and accessible for research.