Isn't that a Bemis and Call wrench?
$5 would be a real good price for your collection. But they are kind of hard to sell for any price I'm told.
So buying it to keep is a score!
But not for resale.
The plane is a Stanley Liberty Bell. Usually these are practically impossible to give away for any price, but then they are usually beat to crap when you see them.
With the color and crisp edges I am seeing in the picture? if the rear handle is mint and its not broken anyplace else?
You could find a buyer for that tool if you wanted, pretty easy.
yours Scott