Waterman, Carene Ballpoint Pen, Vivid Blue w/Chrome Plated Trim
Twist actuated; new ballpoint pen; discontinued color, no longer being manufactured; in original box with paperwork..
As a side note, this color is one that is on the border between blue and purple. Some see is as blue, while other see it as purple (including yours truly). However, according to the Waterman folks, it's officially Vivid Blue.