Opus 88 Koloro - Teal with Beige Ink Tester Robert Oster Blue Black is

Robert Oster Blue Black is a dark blue black fountain pen ink with a purple undertone

is made in Japan and is an elegant dark blue with some medium shading and a pop of red sheen on Tomoe River paper

The parliament meets at the Binnenhof in The Hague

This pen is available for free customized engraving

Opus 88 Koloro - Teal with Beige Ink Tester Robert Oster Blue Black isThis unique pen incorporates a blend of beige ebonite with clear teal acrylic into an eyedropper filler pen with a shut off valve mechanism. To fill, unscrew the section, fill with the included eyedropper, and replace section. To write, simply unscrew the end blind cap, which releases the middle piston rod's shut off mechanism. (video below) Stainless steel Jowo nib Chrome clip Eyedropper included Need Ink? Check out our wide selection of Diamine Ink.