N-scale model train railroad layout show with swaparama for sale and dealer layouts. by adam October 9, 2021 N-scale train show called 2017 N-scale Enthusiast Convention in Pittsburgh, PA. This video has the Swap-A-Rama for sale area and Dealer layouts with their products displayed. Near the end you will see a real train passing the windows while the N-scale trains are running by. See also Beautiful Large Private Model Railroad HO Scale Gauge Train Layout at the Crossville MRC - Part 2