Any idea what this tool is used for?

[Jeff Ramsey]

A cabinet making shop auction yielded this interesting looking tool. No name or marking is on it. Any idea what it's for?

419707

419709

419710

419711

[David Buchhauser]

It looks like some sort of shear to me. Like a rebar cutter, but with a much thinner blade.
David

[Bill Dufour]

is it a strap clamp for the metal banding on crates?

[John K Jordan]

"TubalCain" (Lyle Peterson) has a series of videos on YouTube called What Is It? with odd tools and things, an identification game like this. https://www.youtube.com/watch?v=ex-CS7QXhL8
You could write to him and send a photo and he might know, or even make a video about it!

If you like machining, metalwork, and tools you might like his channel.
https://www.youtube.com/user/mrpete222

JKJ

[David Utterback]

It appears to me that the tool is long sought board stretcher. You know the one, you can fix a board that you cut too short.