This pushes stolen masterpieces into the criminal economy’s secondary functions. They can be used as collateral—pledged as security for transactions in which cash cannot be used or trusted. They can be offered as ransom—returned to the museum or to an insurer in exchange for payment, with the thief or their representative claiming the reward or negotiating a separate deal. They can sit in storage, waiting for the legal and investigative pressure to diminish, used only as leverage or aspiration.
The evidence suggests that the Gardner works served some combination of these functions. The FBI’s belief that they passed through criminal hands in Connecticut and Philadelphia—used as collateral or leverage in transactions that investigators traced but could not fully document—is consistent with the secondary-market pattern. The works were valuable enough to use but too visible to sell.
Art theft specialists have noted that this pattern often ends in one of two ways: either the works eventually surface when the criminal networks holding them collapse, are prosecuted for other crimes, or die; or they are destroyed, accidentally or deliberately, by people who conclude that the risk of holding them outweighs the benefit. The Gardner museum has publicly appealed to whoever holds the works to store them properly—at appropriate temperature and humidity levels—in the hope that destruction through neglect is not occurring.
The FBI has said it believes the works still exist. Geoffrey Kelly, who spent more than two decades on the case, has said he believes they will eventually surface. The logic is actuarial: criminal networks die, families inherit things they don’t understand, attics and storage units are eventually opened. The works may emerge not through a tip or a dramatic investigation but through the ordinary mechanisms by which hidden things become visible.