Vintage soda pop bottle cap, SUN GROVE True Fruit Grape Soda Prospect Hill Bot'g Co. Boston Mass, cork lined. See pictures for condition. NOTE: The soda pop bottle caps I have listed are guaranteed to be 100% authentic originals. They are all unused and new old stock unless otherwise noted. Because I cannot picture every cap, the one pictured is representative of what you will receive. Thank you for your purchase I appreciate it.