This is a used cruise lever that works I believe from 67 and up. I know the 67 lever on the Impalas looked different, not sure about Pontiacs but I think they interchange as far as function. This would have been used up until mid/late 70's in numerous cars, and I think until 80 in pickups.
Used, condition unknown, the word "cruise" is worn off. When I test it with a multi tester on the terminals, things change when I depress the button so I assume it works but won't guarantee it. The button in the end looks crappy, not sure what that is but a black marker would likely make it look nice again.
It will have been taken from a non tilt column car. I always removed those in wrecking yards because the tilt column cruise control levers had issues with the wires breaking from the tilts going up and down all the time.