TThe picture shows a view of this Old Howdy Doody For President Advertising Political Tin TabButton. 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 Howdy Doody and it is marked as follows:
HOWDY DOODY FOR PRESIDENT HOWDY! COPYRIGHT NBC
The button measures 1-1/2'' wide. The tab has never been bent and it appears to be in near mint to mint condition as pictured.