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The crescent and star are from the 19th-century Ottoman flag (1844–1923) which also forms the basis of the present-day Turkish flag. Following the abolition of the Sultanate on 1 November 1922, the Ottoman coat of arms was no longer used and the crescent and star became Turkey's de facto national emblem. In the national identity cards of the 1930s the horns of the crescent were facing left, instead of the now more common orientation towards right.
History
The coat of arms of the Sultan was abolished from usage after the abolition of the Ottoman sultanate in 1922. In its stead, the star and crescent on the flag was adopted. Three years later, in 1925, Ministry of Education opened a contest for determining another official coat of arms and artist Namık İsmail's design won. İsmail's design featured a red shield charged with a white star and crescent. Underneath there was a grey wolf, connected to Oghuz Turkic mythology, standing on a spear. The shield was surrounded by a garland of wheat and oak leaves, with a medallion depicting Ottoman alphabet letters T and C for Türkiye Cumhuriyeti, Republic of Turkey. Above the shield was placed a lit torch, symbolising the country's independence. However, the new coat of arms was never registered as an official coat of arms, and was never used subsequently. A 2014 government review to develop a coat of arms has yet to result in a design, as of 2015.
A circular section of the red flag of Turkey containing the white crescent and star is used in the current emblems of a number of Turkish ministries and governmental institutions, in the emblem of the Grand National Assembly, and as the flag badge on the uniforms of Turkish national sports teams and athletes. It was also used on the old (non-digital) Turkish identity cards.
The Turkish Ministry of Foreign Affairs often uses a red oval-shaped escutcheon which takes its colour from the Turkish flag, while its shape echoes the oval shield at the center of the late 19th-century Ottoman coat of arms. The escutcheon contains a gold-tone crescent and star which are vertically oriented (with the star on top) and surrounded by the gold-tone text T.C. Dışişleri Bakanlığı. A variant of this oval escutcheon (containing the gold-tone text Türkiye Cumhuriyeti Büyükelçiliği) is used by the Turkish embassies.
^ "Arma". Aksiyon Dergisi (in Turkish) (373). 2002. Archived from the original on 2005-02-27. Retrieved 20 February 2015. Cumhuriyetin ilk yıllarında Türkiye'nin kendi armasını yapmak için girişimler olmuş. Ancak bir türlü hayata geçirilemeyen bu proje kapsamında, 1927 yılında Milli Eğitim Bakanlığı tarafından bir yarışma açılmış. Birçok eserin katıldığı yarışmada Namık İsmail'in arması birincilik almış. Diğer tüm armalar gibi kalkan içerisinde bulunan armanın zemini kırmızıymış. Merkezinde Türk Bayrağını temsil eden ay yıldızın bulunduğu armanın alt kısmında Oğuz menkıbesini simgeleyen bir kurt resmi bulunuyormuş. Kurdun ayaklarının altında ise eski bir Türk silahı 'harbe' bulunuyormuş. Kalkanın altında bulunan İstiklal Madalyası ise harbi ve bunun neticesini muhafaza etmeyi simgeliyormuş. Başak ve meşe yapraklarıyla sarılı armanın ortasında ise Türkiye Cumhuriyeti'ni simgeleyen T.C harfleri varmış. Ancak Mustafa Kemal Atatürk'ün de çok istediği bu arma bir türlü resmi şekle sokulamadı.