Vintage 50' 60's mad men wiggle cocktail dress

This dress is sooooo awesome! Made of an iridescent blue midweight satin-y taffeta with teeny polka dots, with contrasting blue and green plaid layered at the sweetheart bust. It does zip up all the way but was just a tad too small for my size 6 mannequin. There's a slit on the back hem which someone repaired (see last picture) in kind of a patchwork-y way, but it's not very noticeable and I think looks really cool and in line with the eclectic style of this frock! B:34”, W:28”, H:40”,L:40”