It sounds like, given the history, your dog has a good chance of being Italian. Most of the Taiwanese pieces I've seen in this color have been recent. The Taiwanese animals are very good -- better than a lot of the things that have come from Murano.
I looked around for some daschunds in amber. I found a few, but none were as nice as yours. I'll keep my eyes open. Maybe your daschund and my tiger have a common Murano origin?