I can only speak about my experience when living in Iran during the Shah’s era. You could see framed paintings (small or medium size) of Mo and also of shia imams (mainly Ali and Hussein i.e. 1st & 3rd imams for shia 12ers) hanging on walls in some public places such as small grocery stores. Those who displayed such pictures presumably were religious. In more working-class, poorer suburbs of Tehran more shops, etc.. publicly displayed them.
whoops....should have pinged you to # 51.
seems that most of the depictions featured on that website have their origin in Persia.