This lot consists of three vintage advertising tins for Merkel's Tooth Powder, originating from Canton, Ohio. The containers are made of tinplate with lithographed designs in a palette of red, yellow, and black. Each tin features a central black shield with the brand name in yellow, topped by a circular logo with a stylized letter M. The side panels are printed with period medical claims and instructions for dental hygiene, specifically mentioning the treatment of pyorrhea and trench mouth. The bottom yellow bands on the tins are marked with the letters MERKEL'S and CANTON, OHIO. These items date from the early-to-mid 20th century.