Machine Robo BH-04: Gattai Saurer (Gobots/Rock Lords: Fossilsaurus)
A very rare Rock Lords combiner. Only released in Japan (under the Machine Robo line) and parts of Europe at the end of the Rock Lords line. This is the Machine Robo release.
@ROLEXUS OK, but not very likely. I was looking for this for years before I got one :)