Are you planning on donating the bike to a museum? If not, I say leave it. It was the PO, not you, so no need to tear out your hair with embarrassment. Getting hit by a canoe that dropped from the ceiling is a pretty good story for the bike, better, I think, than "I just dropped 6000 Krone from my wallet to fix the dent caused by a canoe that dropped from the ceiling."
Richard L.