I just received a 35cm birkin from a respected reseller. No authentication worries. The bag is a beautuiful vibrato. When I attempted to attach a lock to the tirette/clochette, I noticed that the tirette hung short. I pulled out all my other similar sized birkins both exotic and regular leather and measured the tirette/clochette. All of them were about 12 inches. The new bags tirette/clochette was 10 inches. And by the way the key numbers does match the lock number. I quickly checked here on tpf for other vibrato bags in case the tirette/clochette was just short on them. In fact, the picture I found showed a typical length tirette/clochette. So I am wondering is this a tirette/clochette for a smaller bag say 30cm or 25cm? Or is this just the way it was made? Can I have another longer one made? Do I go back to the reseller and complain or what?