They are real ones, i saw them yesterday, a big box full. The blades have the Martindale logo and army numbers stamped one side and a date on the other.
Its just that I'm sure I read on a post somewhere that the later models are a bit suspect or I'm getting confused with the newer chinese copies that have been snapping on people.
I have since realised that we all buy old tools with no issues, so I shouldn't be that worried if I get one.