I picked up excellent Osmia Supra 774D. It has rigid fine gold nib. I have done a bit of research and apparently 4 in the model name is for the nib size, 7 in the hundreds number means gold nib, and D stands for Palliag nib. What confuses me is, that I thought that Palliag nibs were made from silver and nickel alloy. My nib is marked 14K gold but is hard as Palliag nib should be.Is there a gold Palliag nib? Does anyone know more about Palliag nibs?