When Susie Meyerson (Alex Borstein) pays Midge a visit at B. Altman, we are given a perfect product placement moment: a factice bottle of Guerlain Chamade gets its own shot.

There’s a problem, though: the beautiful Pochet et du Courval leaf-shaped bottle shouldn’t be sitting at a department store in 1958, because the Paul Guerlain creation was released only in 1969, 11 years later.