I don’t know much about the history of Afghanistan, but I do know women’s fashions and hairstyles—the pageboy hairdo and the dress and skirt of the women are mid to late 1960’s.
I think you are right. Your timeline also fits in w/ Afghan history. Afghanistan, especially Kabul, was quite westernized & prosperous when they had monarchy (Zahir Shah’s reign), which ended in 1973. Though, the ‘modern look’ remained until Soviet invasion in Dec. 1979. Thereafter, when they established the Islamic State of Afghanistan & the Taliban from Pakistan started to attack & invade Afghanistan, everything gradually went down the tube.