Vintage 70s MAR-LEK Striped Blouse/Top

Vintage 70s Mar-Lek short sleeved button front striped blouse/top. Features wide collar & optional tie for neck (2nd photo). Tag reads size 18,but is definitely smaller than that~PLEASE refer to below measurements (guessing S/M). Very good preloved condition. Approximate measurements lying flat: Pit to pit 19 1/4” Shoulder to hem 25 1/2” Thanks for visiting! Vin14~14