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 Edson in blue sapphire is even more desirable as it has a very rare OGL nib. The acronym means: Oblique Ground Large (broad oblique).

The pen is in excellent condition with very limited traces of use. The pen is fitted with its original blue converter and comes with its original box which is in very good condition.