Dating an ILGWU dress

[LaineRouge]

Hello !
Today while thrift shopping I found this beautiful dress, bought it, and realised it was definitely handmade. From my first search, according to the label it was made between 1974 and 1995, and I guess the big sleeves and bright color look kinda 80s to me... but really I don't have the first clue about vintage fashion. I was wondering if you could help me have a more precise idea of the time it was made !

 

[The Vintage Merchant]

more photos will help, please. a closer look at the bodice could be helpful, and some detail photos of the trim? seam finishes?

thing is, if it has the union label, that means it was manufactured, not hand made. unless someone added a union label to make a home made dress more desirable, which seems kinda crazy.

 

[Jonathan]

It looks 82-84ish to me and definitely factory made with that label.