In 1993 Waterman introduced the Edson model, whose name was meant to celebrate Waterman's founder: L. Edson Waterman.

The pen was extremely innovative and modern, having a translucent sapphire barrel, an inlay nib and a nodernist satin-finished gold filled cap. In 1994 the model was offered in green too and, finally, the following year, red was added to the line. Each model is fitted with a converter of the same color as the barrel of the pen.

In the 2000s more versions of the Edson were added, including a full metal one.

The blue sapphire represents a milestone and it is definitely one of the most significant and desirable Waterman models of the 1990s.

This Waterman Edson in blue sapphire is unused and is fitted with an M nib. The is in perfect condition apart from a tiny loss of plating on one side of the cap. The damage is absolutely minimal and I tried to catch it with pictures but it's hardly visible.