Fluke TS-19 phone test set used by the phone company for years to test single or multiple lines coming into a building. These are commonly call a butt set because of the clip on the bottom and hang from the telephone repair-mans tool belt.
Brand new still in a sealed plastic case. I traded a man for items from the W3AEH estate — he walked away with approx $80 worth of items — gave me the new Fluke unit in return. These typically sell for more than $120 – just looked it up on Amazon. Will sell for $80.