Ok, the back story first....I traded recently for a BM Grip 551 with Wilkins on it. I love it but of course I just had to have the 552 Ritter on the Wilkins so I ordered that with an Orange grips and then switched the blades. Of course, like a good little knife fanatic, I kept the box. A little later I was reading that BM is getting rid of the red class, leaving only gold, black and blue, the boxes that the knives come in matching the color of the class. I was in my closet earlier today and realized the 552 had come in a silver box. I began to wonder, is silver the color they use for all collaborations? What other knives came in a silver box? Do they use other colors (I know the HD and HK knives boxes are different) or is silver the standard for knives not assigned to a classes? Is this an "off the books, behind the scenes" class that BM has?