Steingrau-colored ceremonial trousers with red piping for Wehrmacht artillery

Steingrau-colored ceremonial trousers with red piping for Wehrmacht artillery. The pants have an owner's tag sewn on them: Hübinger, 2 Batterie Beobachtungs Abteilung 34. The pants have moth damage, but are neatly machine sewn (repaired), most likely during the war.  Check photos to get more info on overall condition. Size: waist 90cm length 108cm