... wait until the rank & file membership starts digging around and starts asking for the fine print details of the up coming Museum surplus inventory auctions.
Although it's not at all uncommon for museums to do this with their collections from time to time (it's known as deaccessioning), knowing how some train people are these days I suspect this will raise a few eyebrows. Heck, I suspect most folks have never even heard of the term itself.
Here's an overview of a common definition of the process:
Deaccessioning, the process of disposing, selling or trading objects from a museum collection, is not undertaken lightly in most museums. There are ethical issues to consider since many donors of objects typically expect the museum to care for them in perpetuity. Deaccessioning of an object in a collection may be appropriate if a museum has more than one example of that object and if the object is being transferred to another museum. It may also be appropriate if an object is badly deteriorated or threatening other objects.