3/4 sleeved Harrods tea dress labels?

Adjusts dress, knocks on door , enters quietly and removes hat.......Ladies my good lady wife has recently had the good fortune to be given a 3/4 sleeved 'tea dress' we are unsure of the age though I suspect the 1950's, here are the labels I'll post a full length picture of her in it if it helps?

It's retailed by Harrods but made/ designed by Boussac of Paris


I'm pretty sure given the washing instructions that it is made from Rayon?

I think it would really help to have a full-length photo of the dress. There may also be online resources to help you identify the label, but I suspect that a long-lived business like Harrod's probably didn't change their labels very much.