If it is an antique desk, you may be able to get keys to try from an antique store. If it is a modern desk, and you have similarly shaped keys, try those. Some locks are pretty easy to open. However, if it is a good lock, you may have to call a locksmith or have the lock drilled out. Good luck with this.
Login using the form on the top of the page to post feedback (if you are a registered user). If you have not yet registered, click here to do so. It's FREE!.