Quick review. Lionel's model of the Pennsylvania RR S2 Steam Turbine was the firm's first completely new locomotive of the postwar era. Introduced as the Nos. 671 (for the O gauge lineup) and 2020 ...

L ionel's No. 671 Pennsylvania RR S2 steam turbine is one of the classic O gauge locomotives of the postwar era. Lionel released it for the first full product line of the post-World War II era in ...