Vintage milk bottle cap, COOL FARM DAIRY Milk and Cream Kalamazoo Mich., unused new old stock. See pictures for condition. Size is appx. 1 5/8" in diameter. NOTE: The caps I am listing are part of my private collection which I will be selling off over the next year or two. Add me to your favorite sellers and check back often as I am sure there will be some rare caps among these. Thank you for your purchase, I appreciate it.