How to tell:

An authentic system will have our logo on the top of the base plate.  In addition, German-made systems have a stamp on the bottom stating "Made in Germany".  The Special and 1000 Series will not have a stamp, but can be identified by the logo on top of the system.  

The licensed systems will normally bear the phrase "Licensed by Floyd Rose Patents".  This means that it is not manufactured by Floyd Rose, but is licensed to an OEM to make their own.