No I dont have any proof. But usually if a nib is German made it will say so in the mass drop bulleted description. Also, in my experience, only Chinese nibs say that they’re 18k gold plated. Thirdly, many nibs are made In China, and the *tipping material* is made in Germany. That‘s The case with most “iridium point Germany” or IPG nibs. Having said that, I’ll check out regal’s website and post a follow up if I believe im mistaken.