Regarding the Regina disk music box, wasn't someone in AMICA (or MBSI)
running a service a few years ago wherein he would send you a facsimile
of the Regina registration certificate for your instrument if you
provided him with its serial number? This was someone who had
acquired the original factory shipping records, as best I remember.
Matthew Caulfield (waiting for someone to post a REAL Regina history
here. Where is Nancy Fratti?)
P.S. I suppose there is no one who does not know that the Regina
Music Box Company later became the Regina Vacuum Cleaner Company
(not necessarily the exact name of either company).