It sounds as if your Anaconda is a very early Alpha model. Prior to removing the vX designator from the label entirely there was one batch that still had the vX on the label but carried the Alpha designator. These had grey labels with black lettering I believe.
If you cannot hear the small FeSi 1002 beads within the sleeve when moved at all then it is definitely an Alpha version power cord.
The solid noise you hear when shaking the cord is likely the set of conductors within the hollow tube. If you have any other questions please direct them to the customer service section on our web.