If something here is not right, tell us. You do not need to be certain, and you do not need to give your name.
Somebody reads it, usually the same day. If it warrants it we take the listing down while we look — before deciding anything, not after. Any buyer is refunded in full, including delivery, the protection fee and any framing, however long ago they bought it.
We will not tell the seller who told us, and we will not tell them which check or which report brought it to our attention.
If you are the rightful owner of something you have found here, report it and then speak to the police. We will co-operate fully with them, but we will not decide who owns a work ourselves — that is not ours to decide, and getting it wrong would help nobody.