Limited Edition Lonville Watch Virage Gunmetal GMT Limited Edition GUNMETAL GMT. The Gunmetal GMT is the most complex Virage design featuring both a GMT function as well as a Power Reserve indicator. We named the watch, and coloured the dial, after the grey colour of some of our beloved classic cars: Gunmetal Grey. The multi-level dial features both sunburst and snailed areas, as well as five hands. But despite these complexities, the Gunmetal GMT appearance exudes calmness and elegance.