Need help finding a key

I have a Derby desk with a lock on the middle desk drawer that differs from the rolltop lock. The keyhole is thin but doesn't have a conventional pin and tumbler mechanism. It appears to have a very similar keyhole to a Gamewell firebox lock I am also trying to find a key for.

I can't open the drawer lock to see how it works, but I have enclosed photos of the drawer lock as well as the Gamewell lock (which I can open) so the similarities can be seen.

I could use some help in finding keys for these. I've tried eBay and other sites, but the only keys I can find are either pin and tumbler keys or antique keys that have a stem/pin - neither of which work with this type of lock.

 

Have you a local locksmith? I should think that's your best bet.

 

Dumb question, but I'm guessing you don't live somewhere with a locksmith who also does old locks, huh? Mine keeps an absolute horde just for these situations.

(Ditto bluumz )

 

No, no locksmith. I was hoping to get help here.