Yep I am sure it is from the 70's. If there is no tag on the back board behind the unit, you can probably pull that back board and there should be one on the inside of it or possibly on one of the sides of the main cabinet. If I had to guess, due to no name on the tuner itself, I would guess it to be a Coranado brand. They were sold a lot during the early 70's. A lot of little stores carried them. One of the main distributors for Coranado was a store chain called Gambles. Gambles and another chain called Coast to Coast was a couple of the larger distributors for the Coranado brand name.