Thanks for the replies. I didn’t think about a gutter plane. Wouldn’t a gutter
plane be even more cambered?  I think it prob is a backing out plane. I did not
see a makers mark on it, but will look again.

Don - I was actually thinking of using it as a scrub plane when I bought it. It
was inexpensive enough that it was worth it to experiment.

FYI - I purchased this in Little Falls, NY which is directly on the Mohawk River
and part of the Erie Canal. I don’t know where this particular tool seller found
it, but if it was purchased locally, it would make sense that it was used to
make boats.

-Dan

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I'm a simple man. I like pretty dark-haired women and breakfast food.