The picture below shows a larger view of this Old Be Happy With State Electronics Advertising Smile Face PinBackButton. The pin is not dated but it is believed to be from the 1960s or 1970s. The pin looks green in the picture, but it is imprinted in blue and back. It has the famous Smiley Face and it is marked as follows:
BE HAPPY WITH STATE ELECTRONICS
The pinbackbutton measures 1-3/4'' x 0'' x 0''. It appears to be in mint condition as pictured.