How can I get lables (painted on kind) off glass bottles?

I got some of the Christmas season Coke-a-Cola bottles and they are a really cool shape this year with a raised 'logo' on the front - I have a project I want to do with them for gifts, but need to get the 'nutritional label' that is like baked on paint - not the peal off kind (darn!) I have tried scraping with a knife, doesn't work, and sanding. the sanding works a bit, but also scratches the glass and I would like to avoid that if possible.

Any suggestions???