Curator's note:
This poster is what printers call a "shell": a poster printed with all the graphic elements in place but large blank, text-free areas top and bottom for later/additional/custom printing.
This technique would be followed, for example, if a film or theatrical production were scheduled to travel from city to city or country to country because it allowed each venue to produce a poster quickly and cheaply having only to add dates, times, locations, etc.
Some examples of how this process worked may be seen here and here
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Image source:
https://www.palmuseum.org/en/collections/collections/mahjub-mahjub-play