This example of reference 73663 displays beautiful and unusual all lume Arabic elongated numerals further adorned by orange accents on the dial. Along with reference 741.603 that displays red accents on the reverse panda dial, this model is the only one that includes such architectural styled numerals. Produced in no more than 250 examples, this model is fitted with a minute and hour scale on the bi-directional rotating bezel and houses a manual caliber Valjoux 7736.

This particular model drastically contrasts with most examples of this reference that present the usual Heuer design with applied hour markers to appeal to race car aficionados. As most of these particular models were found with military issue numbers for the Kenyan Air Force, one may believe that this design was made upon military specifications to allow a better legibility in the dark. It is rare to find and non military signed version of this reference and in such beautiful condition.

The present watch with its sublime and unusual design would add an exotic touch to an existing Heuer collection or be the perfect find for a collector seeking unconventional pieces.