1946年のこの日に、戦後はじめて警視庁に採用された婦人警官62人が初勤務をしたことから（wikipediaより）
ということで正確には婦警ではないかもだけど『RAIL WARS! -日本國有鉄道公安隊-』の絵を。

On this day in 1946, 62 women police officers who were hired by the Metropolitan Police Department for the first time after the war started their first duties (from wikipedia).
So it may not be exactly a policewoman, but a picture of "RAIL WARS! -Japan National Railways Public Security Corps-".