Vintage milk bottle cap, SUNRISE DAIRY - P.C. Seiler Grade A Raw Milk Phone 4-8635 Member Wichita Natural Milk Producers Ass'n (Kansas), 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.