Sizes are 7/8” to 1” and the oval is 1-1/8” tall. First and third have his full name while second has his last name only and the fourth has no text at all. All four have metal covered concave backs with fixed horizontal bar pins. The second button has narrow .25” cello split on the back but this does not make a bump on the side edge and all four are NM displaying Mint. Don & Mildred Wright Collection.