those aren’t rocks that is actually rust so I would recommend just leaving it as is if you want to keep the lid on, I’ve messed with jars like that that still have the kids and when I try to remove anything it just takes part of the lid offThe pics would definitely help!
Your reply to this question is exactly what I was just going to ask! I'll ask it nonetheless. Should I keep the rusted lids on any old bottles I find? Does it detract or add the value if you do or do not remove the rusted lid?I like the rusty top. I got a yellow wine bottle with a stony rust covered cap. Just adds to the age for me, not that old anyway.