This is a Blade and Cap Iron for an Ohio O4 1/2 or other 2 3/8 wide Ohio plane. It came from an O4 1/2 that I am parting out. The blade is tapered and has been hollow ground on something like a Tormek. It is pretty sharp but will need to be touched for use. It will clean up nicely if that is how you like them but I left the patina for those that like that (can't put it back, right).
Happy to combine shipping where possible.