First let us say that these trousers are in fact black.  The photo lighting sets off a blue cast, but these trousers are black wool and not the dark blue wool of the standard HJ winter trousers.  These trousers are in good condition with no holes or repairs.  There is no RZM tag, and the ankle ties appear to have been removed.  Based on the cut, these seem to be HJ ski trousers.