First seen in 1947, the legendary Lionel GG-1 is one of the most popular locomotives in the company's nearly 100 year history. It is patterned after the Pennsylvania Railroad GG-1 Electric Locomotive developed in the 1930s to speed passenger trains through northeastern rail corridors. Pennsy Electrics earned a reputation for efficiency, toghness, and dependability for more than 50 years. The solid stripe Brunswick green paint scheme was used for a generation.