Just your mentioning of that brought an old memory to mind. The way to set the “presets” was to manually turn the tuning knob to your selection and then to fully depress the “punch key” of choice, all the way in once. From then on, just a slight depression of that key would return you to that preset. How many remember doing that?!
Yep. Except on our Pontiac with the Delco AM radio (no FM radios at that time) you pulled the button out, then pushed it back in.