Vintage milk bottle cap, FAIRMOUNT MILK Phone 3175 Capitol Dairies (not marked but this is from Salem Oregon and that is written in pencil on the back), used. See pictures for condition. Size is appx. 1 5/8" in diameter not including the tab. NOTE: All of the milk bottle caps I have listed are guaranteed to be 100% authentic originals. They are all clean and ready for display. Thank you for your purchase, I appreciate it.