Coin shine

Hi, Im very new at Unity.
I got a coin model Ive made and I would like to have a highlight that streaks across the coin occasionally. I think I can make this with a additive texture, but Im not sure how to animate the uvs. Is there a way to do this is Unity?
Thanks

Found this script on the Wiki - it looks like it’ll fit the bill. Basically, you create your sprite sheet, and it runs through the frames for you.

If you wanted to do this with a real shader, I’m not sure exactly how (shaders still scare me…).