Keystone Quality, LLCLogo Design Contest Logo Design Contest Contests / Keystone Quality, LLC Keystone Quality, LLC has selected their winning logo design. For $375 they received 149 designs from 32 different designers from around the world. Find out how LogoTournament works How LogoTournament works Contest Entries by Visartes Return to Contest Return to Contest Withdrawn Prefers others. #3 Discussion No comments yet.