Silver Series Conway Stewart Blue with White Swirl 14Conway Stewart Blue with White Swirl Experience the beauty and quality of the Conway Stewart Blue with White Swirl fountain pen from Silverburlpens. This stunning pen is handcrafted and features a polished steel Jowo nib size 6. The pen also comes with a Schmidt K5 ink converter and can be fitted with any nib tip size upon request. The pen measures approximately 145m m long including the cap, with a body diameter of 15m m and a cap diameter of 16m m.