American Committee of Armenian and Syrian Relief, Celluloid Tin Pin-Back, 1919. Collection of the author.
Items like this one were produced during WWI, in a massive effort to raise awareness about the humanitarian crisis in the Near East, including extensive famine in Syria and the Armenian Genocide at the hands of the Ottoman Turks, as their empire crumbled around them. In many respects, the effort was similar to, and even had direct roots in, the antislavery movement and Sanitary Fairs of the nineteenth century. Another connection is to women's movements of the nineteenth century--the Women's Christian Temperance Union (WCTU), the American Red Cross, the Women's Suffrage movement, the Settlement House movement, and, more generally, Progressive social reform.
Read more about this interesting sub-genre of memorabilia here: Armenian Fundraising Memorabilia.