Someone mentioned a small, silver music box that played the Josette theme that was seen on eBay a few years back. I think I might have the one in question. It's all silver, and it came in a purple box. It's about two inches tall, and probably three inches across the top, from left to right. I haven't played it in the longest time, but from what I remember, it plays the actual theme, or a very close version to it. It's a windup.
I don't remember what it cost back then, because I got it as a gift. I was pleased with it, but would've much rather had the original music box released when the show was still on the air in the 60s, but those are very hard to come by intact, and in good condition, for a reasonable price.