The Class PtL 2/2 locomotives of the Royal Bavarian State Railways were light and very compact superheated steam locomotives for operation on branch lines (Lokalbahnen). There were three types in total, of which two were transferred to the Deutsche Reichsbahn-Gesellschaft as Class 98.3 tank locomotives and even survived to join the Deutsche Bundesbahn (DB) fleet after WWII. All the variants have the B axle arrangement (0-4-0 in Whyte notation), the semi-automatic, gravity-feed firing that enabled one-man operation, platforms with guard rails, and a large driver's cab with 3 windows per side that surrounded the entire locomotive boiler as far as the smokebox (what brought it the nickname Glaskasten - Glass Box).
Read more »