İstanbul Büyükşehir Belediyesi'nin logosu, 24 Şubat 1969 tarihinde düzenlenen bir yarışmada birincilik, ikincilik ve üçüncülük ödüllerini kazanarak belirlenmiştir 12. Dolayısıyla, logonun değişme tarihi bu yıldır.
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