Origins of the Original Music Box??

Does anyone know anything about the origins of the original Josette's music-box on the original series?  Was it custom made for the show?  Did the prop department buy it somewhere?  Did they have more than one on-hand, in case it got broken?  What was it made of?  Was it some kind of antique? Was it really a music-box, or did it have some other function?  Has anyone seen anything even close anywhere else (aside from the plastic replicas)? 

I've always been curious about the music-box.  Just wondering if anyone has any information about it.

I think I remember KLS saying it was a hotel water glass with a lid held on with masking tape and having to hold it so that the tape was not visible.

I remember KLS saying that it was a lovely, filagreed piece, but I don't think she said whether it was actually a music box or not. I think I've read on this forum that it wasn't actually a music box ... but can one believe everything one reads?