The Excel-O-Graph was produced in the 1960’s by Gallet, the worlds oldest watchmaker, for aviation, navigation, engineering and scientific applications.  This Gallet Excel-O-Graph is unpolished and retains all its original hardware.  The steel case shows minor signs of wear and measures a large 43mm in diameter excluding the original unsigned crown.  Bi-directionally rotating slide rule bezel.

Tropical grey/brown dial.  Black hour and minute baton hands inset with lume, red chronograph seconds, black subdial hands. All hands are original to the watch.  Original lume.

We avoid describing watches as “rare”, as we feel the term is overused when describing vintage watches, but because of its specialized nature the Excel-O-Graph was produced in low numbers making them difficult to find in any condition.

Excelsior Park EP 40 in house column wheel movement has been recently serviced, is running well and keeping excellent time.

Modern branded tan leather strap and stainless steel branded buckle.

Copies of the original instruction booklet included.