Vintage milk bottle cap, MEYER'S DAIRY Grade A Raw Milk Phone 38160 (not marked but this is from Olympia Washington and Olympia WA is written in pencil on the back), unused new old stock. See pictures for condition. Size is appx. 1 5/8" in diameter. 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.