The MP59 Stock was ordered at the time that the RATP decided to convert Lines 1 and 4 to rubber tired operation. These were not the first "pneu" stock ordered, but they are currently the oldest "pneu" stock currently in service. They entered service in 1963. After 61 years of service on Lines 1, 4, and 11, the final trainset was withdrawn from service on June 12, 2024.