Okay, apologies people - should have announced who I am
My name is Robin Bithrey - I have worked for CHERRY in the UK for almost 20 years and I'm just interested to find out as much as I can about the issue with the MX Board 6.0. To my knowledge, this is the ONLY case of this since the keyboard has been available and it would be interesting to see particularly what the date code is (one letter, two numbers, just after the serial number).
I have spoken to my colleagues in Germany and they have confirmed that this is definitely made with a solid piece of aluminium, with several layers of coating which give the specific finish, so to see the wear is disturbing to say the least, as well as exceptionally unusual. In my personal opinion, this would only be caused by some form of severe usage - it looks (certainly from the image showing the large area of wear on the left side) as if this has been held or rubbed for a long period of time. How exactly this has been achieved, I really don't know - only the user could tell me - but certainly in 'normal' usage, it's doubtful that something like this would happen. My son, who is a gamer, uses his MX Board 6.0 almost daily and for relatively long periods and there are no signs of wear on his whatsoever. He's had this now for approximately 9 months.
The image below is of a bare casing - this was sent over by Germany to show the different layers of coating that are present and it has been deliberately sanded with a Dremmel hand-tool to get to this level - hope it demonstrates how the product is built.
So, if someone can give me the date code, it would be great - just interested to see when the keyboard was built and report this back to the factory.