This is a very troubling thing.  It would be of much greater value to
the prospective buyers of the stolen articles if we could determine if
an article that may be put up for sale is one of the stolen ones.

There may be many extant copies of each of these stolen musical
machines.  How would one ever know if one were buying a stolen article?

Full descriptions including serial numbers or other positive
identification is a must.  Hopefully, the museum can provide this.

Musically yours,

Bill Wineburgh