Seems a few vendors sell them without the gold plating, most state in their description (this/our batch does not have the gold plating).
If you aren't happy with it contact the vendor to find out if they'll do refund/return.
As far as how to determine if you received a clone I have no idea, acerig released a 1:1 clone right down to the insignia & gold colored plating about a week or two after the original hit the market.