Need help dating this robe

[crystal]

Hi! I’m in need of help dating this robe. All my research indicates it’s potentially from the 40’s. All comparable items on eBay and Etsy range from 40’s-70’s and I would like to narrow that age gap down a bit.
Everything I search for Lady Duff comes up with Lady Duff-Gordon and her brand Lucile, but I can’t find anything concrete regarding this specific label. thank you all in advance

 

[poppysvintageclothing]

Looks late 1940s to me or early 50s. Very pretty piece!

 

[Vintagiality]

Yes, I would say late 40s.
Here is an ad
https://pin.it/6kovSAv

Many on Etsy list these as 30s but the Bur Mil trademark wasn’t registered until 1943

 

[Vintagiality]

Lady Duff trademark registered in 1923

 

[crystal]

Thank you all for the additional info. This is my first vintage piece I’ve done a deep dive on and I’m finding it so fun learning so much!

 

[bycinbyhand]

This is probably early 50s