Check the listing for details. Telephone Handset Transmitter Vintage Parts ITT Western Electric AE. Condition: Open box. Listed at 7.49 USD. Variously labeled telephone handset transmitters. The kind you just unscrew the cap on the handset and drop it in. The labels/brands/colors may mean something to you, so I made a listing with variations. The one labeled 755554-71 should be 75555 4-71. You can see the proper label in the photograph of it. The typed labels on the photos helped me sort them because I had taken so many photos of them. But left them in for you because they'll help the looker sort them out too. They are untested to be sure they work, and all of them had no glaring damage (to the front), and any scuffs are from storage. If you receive one with a problem, I will take it back. If you have a question, or need more detail in a photo of one of them, do not hesitate to ask.