It’s approximately 26” in diameter at the widest points, and the fixture only, not including any hanging chain or ceiling cap, is about 19” tall.  There’s about 13” of chain to hang, but the wiring isn’t that long.  The wiring is old so it needs to be evaluated and probably updated.  There are areas of chipping and the ceiling cap has been painted about 30 times so you’d probably want to replace that.  Please consult the shipping calculator for shipping costs, Thanks