VTG Long Greek Silver-Threaded Dress & Matching Bag

VTG long Greek dress and matching bag. I purchased this set in Myconos, Greece, in 1972. The beautiful silver threading decorates the off-white fabric with 18” slits up both sides. The tag shows size 3, but not sure how that translates into American sizing. It is 19” from armpit to armpit; only slightly wider at the hips. From the edge of the shoulder to the other edge is 16”; the length from the edge of the neck is 54”. On the right sleeve and upper right bodice, there are very slight stains. The matching purse does have age stains (please see last 4 pictures).