http://typophile.com/node/55718

As Simon said, there is already a Unicode slot for the Rupee currency symbol, and a recommended form, which I have rendered in several fonts, e.g:

But it's not really in the same league as the leading monetary symbols, and doesn't work with "1", so I can see why some people might think it needs an upgrade.

May I suggest an international symbol of the Rupee?

^ That's what immediately came to mind. What's the reward for the winning design? I could use some red potion.