Vintage charcoal gray Giorgio Sant’Angelo pants

Vintage slacks with tags. RN numbers indicate they are from the 70’s. Pleated front and side closure with button, no zipper. Two front pockets and two back pockets with button closures. High waisted. Waist band should be at your waist. Straight leg. Tag says size 16 but the size charts have changed since then. Waist 34 inches Inseam 31 inches