@Ronflaix I'm not sure where the mugs are from, some friends gifted them to me a few years back. I'm 99% sure they're bootlegs and not official. Though you never know with Eva goods!
@shlee It's not a sticker, the letters are unpainted, with the polished metal showing underneath. It's something they offer when you order directly from the company (Grosche). I don't think a sticker would survive the heat.