So they were schiso.
I have a sudden urge t o bury coins.
For the future.
It's likely that coin hoards were kept buried all the time, and excavated when needed, so that only the owner/holder/vendor knew where the money was. When the (usually) guy croaked, the secret often died with him. This guess is based on the fact that very large hoards are found in more or less intact jars, while smaller ones had evidently been buried in less durable material such as cloth or leather bags.