A couple of days ago I met Alan Kaplan at Leo Kaplan Ltd, and Jack Feingold at Gem Antiques - both NYC paperweight dealers with large collections and years of experience.
Neither was able to give a definitive answer on this weight or even put forth an educated guess. Neither denied the Bohemian theory, but neither seemed willing to accept it either?

I decided to put it out on e-bay with everything I knew and everything that had been guessed. If you're interested it's e-bay Item number: 7406491723.
I've had a number of inquiries from people, but none were willing to offer any information. After just a day and a half listing, there are LOTS of people signed up to watch this weight (almost 100 already!).
I suspect that everyone out there has his/her own theory and is unwilling to share it! :cry:
I know the current high bidder - he's a Parisian who has in the past only seemed interested in French weights, so I don't think he's bought in to the Bohemian theory!
Apology to Simone and Leni - I completely forgot to mention the tadpole theory. I think I'll leave that one alone.
Leni - When will we all be invited to your place for some wabbit stew?