What is this cutting tool for?

[MarcD]

I know what it's for but I can't remember!!!

[Papaw]

I think we just had one of those- a button hole cutter?

[Billman49]

Papaw is right - we have had one of these recently (and also another a few months ago) - leatherworker's tool - difficult to see, but has the hole punch broken off?? Never seen one like this before, or with a recess to stop the hole punch cutting if you just wanted a slot...

[Branson]

Who's the manufacturer? 
Looks like the punch isn't broken off, but simply missing.  They screw in and out on the better tools, and with that nice box joint, this *is* one of the better tools.

[MarcD]

Manufacturer:"x F Cerster  Newark NJ"

Now I remember it was a buttonhole cutter!  And yes, the hole punch part is broken!