Apparently the black chair that we received was an open box because we ordered 2 gray chairs of the exact model and the packaging was different in the black one.  And when we were building the black chair the screws did not go in as smoothly as in the 2 gray ones because the grooves had been grinded and there was a part missing that we had to go out and buy an adaptation.  All this was done in an effort to not return the chair .