The picture shows a view of this Old HowdyDoody For President Advertising Political Tin Tab Button. The button is not dated but is believed to be from the 1970s. It may have been from a Howdy Beef n' Burger Restaurant. It has a nice image of HowdyDoody and it is marked as follows:
HOWDYDOODY FOR PRESIDENT HOWDY! COPYRIGHT NBC
The button measures 1-1/2'' wide. The tab may have been bent lightly but it appears to be in excellent condition with some light wear as pictured.