When we got this seat in, it was still in the original box, but the hinge bases had disappeared. Needless to say, we were disappointed. We did find a set of NOS hinge bases in white (this took several years), so here it is! This seat was made by Olsonite, the color is Crane’s Jade Green, and this seat only fits elongated toilet bowls. Hinge spacing is the normal 5 1/2″. One only, we’ll never see another one!