Vintage 60s Green Beaded Sleeveless Dress by Samuel Grossman
Back nylon zipper. No materials indicated - has pleasant feel with slubs, inside is very smooth like nylon interface.
Vintage size E, my modern estimate is XL based on measurements and how dress fit model (Model is 5'6" 38/32/37 and dress was loose on her)
40" long, 19" across top shoulders (not a shoulder measurement as this extends over arm slightly),17" bodice. 41" bust, 34" waist, 44" hips - please compare these measurements to a dress you own that fits well. 1" hem allowance. Great condition - no flaws.

This item is sold from an excellent, highly rated vintage boutique.