I can't find any markings, and it's 4.5" long.
It seems to be in good shape, which makes me think it might not be that old...but the style looks old.  Thanks, Bill

My photos are too large to post. Let me resize them and I will get them on here.

Here are some photos.

Maybe a wrench that came with  a circular saw?  Rather tiny.

If it's not a wrench, maybe a valve spring tool ? I can't tell how thick the jaw is.

EvilDr235

It's from the tool kit of an Early 70's Honda motorcycle.

Thanks, Kirk

Looks awful small, must be a spoke wrench.