William H. Koster III, 83, of Barberton passed away on May 2, 2024 at Pleasantview Nursing Home following a short period of declining health. He was born on October 27, 1940 in Akron, OH to the late William H. Koster, Jr. and Lillian Fay Whitaker Koster. Bill was a 1958 graduate of Norton High School. He had a passion for historic bottle collecting. He was an original founding member of the Ohio Bottle Club. He was an avid Barberton Magics sports fan. He polished and cleaned the Barberton High Schools trophy cases for 47 years. In addition to his parents, he was preceded in death by his sister, Karen Gross: sister and brother-in-law, Diana & Larry Foster. Those left to cherish his memory are 4 children, 7 grandchildren and 3 great grandchildren. A private service will be held by the family. Arrangements entrusted to Adams Mason Funeral Home (330) 535-9186