The Pelikan Souveran M605 fountain pen in green and white is a piston filling pen that uses bottled ink only, and features a body of light green and silver striped celluloid acetate, with a white cap and rhodium plated trim. The 14k rhodium-plated gold nib is a very smooth writer, and does tend to run a bit on the wider side. The Pelikan M605 fountain pen is a mid-sized pen that is comfortable in the hand, but not too large for most writers.