Everything looks terrif for what I am guessing is Z ? Sorry if it's shown somewhere. I don't see it. Yet the track looks so good it could be hand laid or Atlas code 55, N. The couplers seem to look large for N (making it Z ?). I don't know why most pics/entries in 'Rail Images' leave out the scale name. In this case it could be on purpose to prove that knowing creates 'power of suggestion'. So without knowing we are forced to admit it's so good we can't tell what scale it is (below HO of course !!)....! Loved the green caboose... M