Rare vintage mixed Peanuts white plastic buttons with 2 styles of Charlie Brown and 4 other characters.   
They are 9/16" or 15mm in size and have molded shanks and although not on cards and not marked, these were made by JHB International.
Each has tiny lettering under the character's portrait "c. United Features" with different dates, 1950 for the 4 Charlie Brown, 1952 for the 2 Lucy and 2 Linus, 1960 for the 2 Sally and 1966 for the one Peppermint Patty button.
All in very good condition.