Vintage milk bottle caps, Lot of 50, ENGELHARDT'S DAIRY Bay City Mich., Chocolate Milk, unused new old stock. See pictures for condition. You get 50 for one price. Size is appx. 3 3/8" 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.