I've seen one in the display cabinet at the Adelaide lodge I think, they have some pretty amazing stuff in there including some cool gold and silver pieces. I'm not sure I can tell you much about it but I know someone who can, if you can list off a couple questions then I can pass them on.
Seen similar - not that exact one.. suspect it will be a low mintage offering, id anticipate less than 500 pcs and collectible to the right brethren