Lionel: 2431440 BTO Pennsylvania Legacy M1 Mountain #6918 O Gauge Many consider the M1 to be the high-point of the Pennsylvania's steam locomotive designs. Conceived as larger passenger power to reduce the need for double and tripple heading K4's, the M's quickly found their way into freight service. A small percentage of the roster was equipped for passenger duties, but they are best remembered hauling priority freight at speed along the banks of the Juniata and Susquehanna Rivers. Three years after building the first prototype, the Pennsy ordered 200 class M1 4-8-2s from Baldwin and Lima. Another 100 units, classed M1a, followed in 1930 from the same builders and from Juniata itself. The primary spotting difference between the two subclasses can be seen in the steam delivery pipes which are external on the M1's and hidden inside the cylinder saddles on the M1a's. Both classes were generally operated similarly and as a whole received the same variety of detail changes over their careers, including new front end pilot and headlight arrangements and of course a variety of tenders. Lionel last offered our LEGACY M1a in 2014, but we've never produced any representatives of the 200 M1s. This year we're correcting that oversight with our best M yet! Featuring new tooling for the cylinder saddles, this run of M's also includes multiple tender, pilot and lighting arrangements to better match the individual prototypes over the course of their lives; from the beautiful 1926 striping of No. 6855 to the brutish modernized front end and 8-wheel "coast to coast" tender on 6888. This will also mark the first release of the M's with WhistleSteam and Bluetooth as well as a kinematic drawbar. Don't miss this opportunity to add the best of the Pennsy's best to your roster!