Vintage exhaust / muffler for a Tecumseh or Lauson engine. It is very old, I havent seen another one like it. A must have for a correct restoration or to complete a project. It is from an H25 or H30 engine, though it would fit various applications you must research first.
May be what you need for your go kart, minibike, or vintage mower. Rupp, Bonanza, Fox etc.
It has rust as seen, though no rust through holes. It would clean up much better than what you see.
I am not the original owner of this so being sold as found.
Good luck!