Superb post by Ms Vani Hegde. She has a really interesting blog covering wide variety of things. Having retired from a bank, she knows the industry really well for a post like this.
It may just be a summary of the symbols and slogans of various banks in India, but tells you a lot which detailed posts on banks will not tell you. We treat banks/firms as homogeneous entities in our research, but each one is different or atleast trying to be different. They try and showcase this difference via multiple ways like logos/slogans.
It is actually great learning to track changes in these symbols and slogans of different banks over their history. How the bank changes all these messages either responding to current changes or anticipating some changes, can be beautifully captured by seeing through this history.