The PLM 241 B 1 was a high-pressure steam locomotive built in 1929 for the PLM (Chemins de fer de Paris àLyon et àla Méditerranée) using the Schmidt high-pressure system. It was a 4-cylinder compound design.
The manufacturer was Henschel & Sohn of Germany. It was considered unusual for a French railway to buy German technology due to deteriorating relations between the two countries at the time. Schmidt and Henschel appeared to be the only sources of suitable technology.
Only one was built. The locomotive was scrapped in 1936.