First is 2.5" with metal back and bar pin and with curl naming NYC maker Emress Specialty Co. Front has big bold text "The Beatles Are Here!" Issued for their USA arrival in early 1964. Essentially Mint. Next is a 3" litho with curl text "Beat Prod. Co. ©1964." Button is designed as a face and has a pair of glued on metal and plastic covered eyes with small black ovals on the interior that move about above the slogan "Yeah/Yeah/Yeah." NM. Last at 2.5" and also c.1964 is a flasher with metal case back naming maker Dimensional Research in Burlingame, California. Front has facial design with blue eyes that move rapidly side to side when the button is moved. Small paint loss on the reverse rim edge but front displays essentially Mint. See Beatles jewelry manufacturers original art lot #2683.