Hi Geoff,  The Powerhouse Museum in Sydney has a huge collection of
mechanical musical instruments, however, much of this collection is in
storage and not displayed.  I do not believe that they have restored
any of these instruments, but merely keep them as historical artifacts.

To my knowledge, the Powerhouse also has acquired the roll perforating
equipment from The Mastertouch Piano Roll Company, and are storing this
and many instruments in a storage facility in far Western Sydney.

Paul Brennan
Sydney