Help dating dresses

[Craig Arrowsmith]

Hello all, Craig here, a vintage retailer based in the north east of England. I bought 200 dresses recently and I am unsure about dates for some of them, as I generally deal in 60's and 70's womenswear. Any help would be appreciated !!. Thanks in advance.

 

[Craig Arrowsmith]

No labels at all on any of them, and they are all black.

 

[poppysvintageclothing]

They appear to be late 40s, early 50s.