TAG Heuer's limited-edition Monaco is going green for the Grand Prix de Monaco Historique. The dial is sporting a sunray-brushed finish in an emerald hue that fades to black around the edge. Black counters complement the smoky gradient effect, while the silver-tone markers illuminate at night. It's housed in a 39mm brushed steel case that's fitted with a black alligator strap and secured by a clasp with a shield logo. Visible through the case back, the watch is powered by an in-house Heuer 02 movement with an 80-hour power reserve and is limited to just 500 pieces.