Is this a locksmith's tool? plus odd key

[mkz]

Thanks for the info. The key does not go to the lock. It was in the collection and I am just curious as to why it has a name on it. I assume maybe it is the name of the lock shop or locksmith. I couldn't find another example of this so thought it might be unusual. I'm more into locks than keys so pardon my ignorance! Thanks for everyone's help!

[Timothy]

Okay! So maybe after all it may be Yale Lock. AS what Huw and Pete said the lock may be Burg Wacters lock. This mean you may end up find a blank for that lock. I have no idea of what blank it would be but maybe Huw may know. Good look luck....Timothy.....