Pelikan M605 Marine Blue with extra-fine nib. This is a recent Pelikan special edition. It’s not a demonstrator, but a stunning dark blue translucent plastic.
The trim is plated with palladium, and the nib is rhodanized. This one has Pelikan’s usual generous extra-fine nib.
The ink is KWZ Iron Gall #5, which has gorgeous deep color, beautiful shading and generous flow. I’m going to be reviewing it in depth, but I think it’s a wonderful ink.