Celebrating 50 Years of LES! It's the 50th Anniversary of LES! Fifty years ago, a group of licensing professionals met in Hollywood, Florida to establish the. This playable work of art is a hand-crafted Gibson Custom tribute to the forthcoming Chinese New Year -- the Year of the Dog -- which begins February 16th. Les Trente Glorieuses refers to the thirty years from to following the end of the Second World War in France. The name was first used by the French.