Vintage 60’s Sequin Shrug Trousseau and Travel Atlantic City Black Size M

Vintage Shrug or Cardigan 60’s piece fully sequin, lined inside. Black. No size, see measurements below. Maybe compare to a modern medium? Made for Trousseau and Travel Atlantic City. Has a few spots of missing sequins, or loose - on backs of elbows, and sleeves, top of right shoulder, and also a small spot at back of neck. This does have a tiny bit of stretch. Cool notch neck detail. Measurements flat Pit to pit 21” Bottom to top hem 17” Arm opening 5.75”o