in 1946 production of the s4 resumed, and it continued till 1952. volumes were low, however, reflecting the dire state of the french economy. by 1950 volumes were beginning to recover, and even after the launch of a complementary model it is clear that many of the 817 salmsons produced in 1951 will have been s4s. however, in 1951 the bank withdrew financial support from the company after which it was placed in a form of administration. automobile production was run down, with the last s4s produced in april 1952.