pair of "WASSILY" chairs

I've always wanted a set of these things and now I've got 'em, but no space (yet) in the house to put 'em -- they take up a surprising amount of real estate in a room?!

These are commonly called WASSILY chairs, a classic design with somewhat of a pedigree it seems.

https://en.wikipedia.org/wiki/Wassily_Chair

They're made of black leather (I think?) on chrome plated steel tube, these are slightly surface rusty but should clean up fine. Pic 2 shows the underside of one, pic 3 is the back of the other, pic 4 shows the various stitching and whatnot that's supposed to help identify how "genuine" they might be and/or what era they're really from, I haven't studied up on it all yet...