On the old M75s there is only a small white and red label with no room for anything besides size and a code. That can be contract date I guess, never thought much about it. New issue stuff has a NATO cat number as well as a SAP number. Old have neither. As for name of pattern, it started with the M75, however the pattern changed once, swapping out the brown with khaki, then again it changed with the M98. A new pattern is coming soon, which will replace all uniforms in use.