XDJ-XZ-n how limited it is?

Hi there, first of all happy holidays! 

Yesterday I purchased a Gold "Limited" edition of the XDJ-XZ controller, I'm very happy with it, and it does a really great job compared with my CDJ-2000nxs + DJM-900nxs setup. 

However, I realized that this unit didn't came with a tag that identifies the # of this limited controller, usually or I should say, in the past Pioneer identified their limited units with a tag on the back.

Does anybody in this forum knows how many gold limited units where made? 

Thanks!