I've offered but I've never had anyone actually want any coins i've found. They usually joke and say something like "if you find a buried treasure you have to split that with me." I did find a silver spoon once that belonged to the homeowner when she was a child ,and she was happy to see again after forty years.She had forgotten all about it.I have no problem handing over stuff like that.I'll ask before I detect if there was ever anything of value (sentimental or otherwise) that was lost on their property before that they know of (jewelry items and such),if there was I tell them I'll return it if I find it.No problem.It's all in the hunt.