Vegetable/fruit peeler?

[aquachigger]

It looks like a vegetable peeler, but I've never seen one with a "blade" in the center. Found it in the river. Any ideas?

Front and back...

 

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[aquachigger]

Thanks, never thought of that type of use. I'll do some more research and see what I find.

 

[mojjax]

folding fingernail file ?

 

[diggummup]

folding fingernail file ?

I can see why you would say that. I see rivets on either side where it looks as if it is made to be opened/closed with a swivel type action. Electrolysis would bring out the detail more.
I don't have a guess but thought i'd add my two cents.