Wooden ruler Burmese tribes 40s

Curious ruler with 20 painted wooden figurines representing the peoples of burma, which has more than 130 ethnic groups. The english wording on the back of the bar, "national tribes of burma - made in burma, " makes it possible to date this object from before 1948, when the english colonization of that country ended. It's kind of the mystery. A memorabilia of the time?.