60s Black Cocktail Dress - so Mad Men! size M

This is a slinky, sexy little black dress circa 1960! Simple and lovely. Boatneck cut and draping fabric around waist is as flattering as can be. Three very small pin-sized holes in back of one sleeve; see last photo. Otherwise in great vintage condition. No tags, about a size medium. Measurements flat: waist 14.5", bust 19.5", length shoulder to hem 40.5".