Looks to be an old OEM Sportster peanut tank. Pretty rough black spray job on it; came with a chopper project. Sand and re-paint if you’d like! Inside is nice looking for its age (see pics). I’ve never had fuel in it. Couple small dings, one on right side and one near front are most noticeable. I would imagine they could be fixed or run as is! Petcock moves freely as well. I’ve included a bunch of photos to help portray condition as accurately as possible. Please let me know if you have any questions!