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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.

Black lacquered metal bilateral circular receptor trumpet hearing device. There are two circular receptors back to back at the end of a single fixed tube. The receptor pans are partially covered forming two hollow convex receptors open in opposite directions. The earpiece is curved and made from vulcanite. There is a small ring on the tube section so that a user may wear it around their neck.

Dark, tarnished metal hearing device that resembles a stethoscope. It has two earpieces that hang from the ears and one funnel mouthpiece with a clip on the back of the metal funnel mouthpiece for the user to fasten to their clothing or pocket. The tubes running from each earpiece to the mouthpiece are composed of rubber.

Black metal conversation tube with mouthpiece and earpiece. Mouthpiece appears to be of different material than metal. Rubber tubing covered with tightly woven black material. Mouthpiece is indented bell shape with an interior plate with four holes.

Black metal rounded open ball receptor trumpet device with a cut opening in the ball receptor shaped mouthpiece. Earpiece is made of vulcanite. No adjustable parts.

Adjustable Resonator telescopic device, black with chipped area showing gold paint. Knob on body of device allows the size of the mouthpiece opening to be controlled. The earpiece is curved and adjustable allowing it to turn in all directions and to be inserted completely inside the mouthpiece section.

Black trumpet closed ball resonator with earpiece. No opening as per mouthpiece. Looks like a rounded vase with a earpiece protruding from the vase.

Conversation tube with a curving pipe-shaped receptor-mouthpiece and one elongated earpiece with short tube connection . Mouthpiece and earpiece are brown in color, made from vulcanite. Tubing is rubber covered with black material. Receptor-mouthpiece fits into a pocket for concealment.

Conversation tube with black vulcanite mouthpiece and earpiece. Rubber tubing is thin and covered with tightly woven green material. .

Rubber conversation tube, with dark brown metal or vulcanite mouthpiece and earpiece. Earpiece is elongated. Mouthpiece is bell shaped. Rubber tubing is thin, covered with tightly woven black material.

Invented by Lieutenant Colonel David Porter Heap of the United States Lighthouse Service, the Topophone (from the Greek 'topos' = place and 'phone' = sound) is designed to assist the ear in determining the direction from which a sound originates. Two curved metal funnels in opposition with each other at the end of a long wooden rod. Small openings at the ends of the funnels and 3.5 inch wide openings at the receptor portion of the funnels. The rod can be folded and there is a suspension ring that allows the user to wear the device and one that protrudes when the device is folded to hold in place.

Black (flat finish) metal (Brass?) trumpet device called "Marshall's Collector" as per Hawksley 1883 Catalogue. It appears to be composed of three pieces that are adjustable but not removable. The earpiece is the shortest piece and the tip is made of vulcanite, the body is 9 inches long and the funnel is 6 inches long with a 5.75 inch wide opening.

Brown vulcanite bowl/shell shaped sound collector device with wood handle attached to one end. It is a fabricated model of an abalone shell. The abalone shell is called an "ear shell." 10 inch long wood handle is not original to the device.

Small black metal black trumpet with vulcanite earpiece. Earpiece is partially broken. The wide mouthpiece has a flat edge to allow the use to place the device on a flat surface or shoulder. One small clip on the body of the device to allow it to be worn from the body or clothing.

Black metal trumpet device with curving main section leading to receptor and earpiece.

Aurolese Phone Floral tube with consisting of a metal tubing covered with black ribbon that connects the vulcanite receptor that resembles a flower to a eartip that is shaped to fit into the auditory canal. The eartip is painted a flesh color to blend in with the skin color. One petal of flower is broken off.

Super-ear device with one tortoiseshell design earpiece that fits over an ear and one protruding eartip. Attached is a gold clip mechanism that allows the user to wear the device over the ear.

One pair of aurolese phones. Metal headband with two shell shaped auricles that fit over both ears. The auricles are metal and beige in color. Auricles are heavy and were made for men. F. C. Rein.

Brown vulcanite trumpet device that is all one piece, no sections, "Dr. Williams Pattern" as per 1883 Hawksley catalogue. Mouthpiece is funnel shaped, curving and with a 5 inch wide opening, with narrow 3 inch long slit along the side. The trumpet is 12 inches long.