Quoin Corner for Vinyl Siding LLCLogo Design Contest Logo Design Contest Contests / Quoin Corner for Vinyl Siding LLC Quoin Corner for Vinyl Siding LLC has selected their winning logo design. For $300 they received 153 designs from 19 different designers from around the world. Find out how LogoTournament works How LogoTournament works Contest Entries by fermat Return to Contest Return to Contest Withdrawn 9th #62 Withdrawn Prefers others. #61 Discussion No comments yet.