Harley seems to have no trouble finding ever more unique ways to help enthusiasts celebrate the Motor Company's 110th Anniversary. This time out, the Harley-Davidson Museum is providing a unique way to add a message to its "Living the Legend" Rivet Wall. That's right -- in honor of the 110th Anniversary, the Museum has released commemorative 110th rivet (pictured below) that can be customized with a personal message. All rivets purchased by June 15 will be engraved and installed at the Harley-Davidson Museum in time for the 110th Anniversary Celebration in Milwaukee over Labor Day Weekend -- so uh, better hurry if you're interested in that sort of thing. The Rivet Wall is a focal point of the Museum's 20-acre campus and currently displays more than 4,000 rivets.