I've done some searches for the rabbit, but no luck yet. I want to comment on the pose and technique. The pose is one used a good bit for Murano rabbits. The hands and nose remind me of some V. Nason rabbits, but Nason didn't use this technique that I've ever seen. The technique of applying gold to the surface is a favorite one. Companies or people that are most famous for the look include the Barovier companies, Martinuzzi, and Barbini. There are others, of course, but the technique gives the rabbit a higher status than your average run-of-the-mill cased rabbit. It's a keeper.
There is a couple of things that make the design different than many. The hind feet that stick out like balls and the long tail. The long tail reminds me of a couple of animals I have, but I won't mention company names because it would just be confusing without something more concrete.
Adding something -- most of the opaque solid-looking animals are not solid. Of course, one doesn't learn they have a cavity in the middle until the animal arrives broken in the mail. The ears will ping on any animal because they are thin and vibrate fairly easily.