I figure that you tried to translate the inscription on the box on the first picture! Retors means the procedure they use to twist the thread. Brillanté means shiny.Years ago, I embroidered a cutwork tablecloth with a thread of that company Cartier-Bresson I had to buy it in a specialty shop. I learnt that this company do not exist anymore. You got a treasure, cherish it.
If you need to translate anything else, PM me, French is my mother tongue.