This lock and key are in absolutely gorgeous shape. The lock and key number is 317. The lock works great. You get a choice of a 6" bracelet, a 15 " choker, or a 31" necklace. I have a few of these that I am offering sizes on, so choice of chain is based on availability of first come first serve. Chains are unbranded. This Louis Vuitto lock set also comes with dust bag and Louis Vuitton Box.