Toad isn’t really one for taking risks it seems.
Whereas Coco is not one to pass up a free lunch (or dinner, breakfast, brunch, etc).
Finders Keepers, Losers Weepers was actually the basis of an old English Law that was incorporated by many New England states in the US. It allowed collectors to have rights to a found item over that of a landholder whose land that the item was found at. It was only recently that the rights of landowners was reasserted, but only in some cases.
Basically anything that was deposited, lost or abandoned more than fifty years ago (this is a guesstimate since the law has set no firm date) is considered archaeological by nature and belongs to either the original owner or the landholder, not the finder/collector.
So if you dig up an old shovel from 1910, it doesn’t belong to you.
But if you find a bag of cash that someone lost yesterday? All yours (subject to a waiting period and reasonable attempt to find the previous owner).