Hi, I am very confused about Walter Brend M2 auto pre production #1-50. I had purchased a set of these knives thinking they are the only 1-50 pre production dated february 2012 and January 2012. The same knife is all over the internet 1-50 I cant find any other numbers in this edition did Walter just release 50 of the same number 1-50? If anyone can help me figure this out it would be much appreciated. Thanks,