Vintage tan gray plaid ILGWU skirt sz 18

In EUC. Please see photos for approximate flat lays measurements. I welcome any questions, so please feel free to ask. Has no material tag or brand tag. Has workers union ILGWU tag and size tag indicating size 18. No pockets. Zipper at the back. Lace at the inside bottom lining. Please note for lay measurements, vintage measurements are different for current times. Pls find your measurements as well, for accurate fit, based on flat lay photos. From pet-free, smoke free home. D