Aunt Worked at Tokyo PX
This photo was in poor condition but limited retouching to just contrast. You can see the "PX" on her badge. My aunt said she worked at "the PX" but is positive it was at the Matsuzakaya Department Store location (and not at the round former Hattori clock store).
While the back says 昭和２３年(1948) on the back, my aunt insists it was 1947 and worked only for a short time in the 2nd Floor Stationery Department due to a moderate illness caused by the war. She also said mom worked downstairs in the basement flower shop for quite a while.