whose blind stamp is on this JOsephine Baker poster? says "Paris London N.Y. Madrid"

Lots of information about the poster here (the original artwork apparently)

https://www.lofty.com/products/revue-negre-1925-1-obq0g

But not about the blind stamp.

 

That's a different colorway. I suspect the OP's to be a reproduction. A comparison of sizes may prove it so. (The original is 46 3/4 in. x 62 1/4 in.)

Debora

 

the one I posted is not that big about 34x25" but I'd like to know what that blind stamp means.

 

it's likely the paper manufacturer.

 

I agree that it's most likely a reproduction because I doubt there would be that blind stamp on the original. Originally it was an advertisement. Reproductions are certainly available.

The color difference may indicate fading.

(The information in the link I provided shows up a lot, and verbatim, when these posters are offered for sale. Sellers feeding of those who came before? I wonder where the start point is.)

 

I get the impression (pun intended) that the blind stamp is merely an attempt to make a reproduction seem like something "more important".