Like who made it? What model is it for? What's it worth?  I can't figure out what that circle k or x logo is on the back.  Thanks!

1. It's a modern reproduction.
2. It's in an unfinished condition. It's an assembly of fairly rough castings in need of a lot of final polishing, etc.  In particular, the area of the pan and frizzen has not been filed to final shape.
3. The frizzen undoubtedly will need hardening after being filed to final shape.
4. My guess it that it came from an unfinished kit.
5. For these reasons, value is not high.

The K is for "Ketland," a modern maker of high-quality locks.