Yep what Darin said,this is why they suggest changing antifreeze in your auto. Even a empty antifreeze can will rust from the inside out.Collecting cans I put more value in a empty can and ask sellers to empty before shipping. Lot of work but you can protect from rusting away from the inside out by coating with gas tank sealer.
You will be lucky to get someone to value without a pic.
Last edited by Loyd Pierce; Fri Dec 15 2017 02:08 PM.