OMEGA’S SEAMASTER COLLECTION IS SO integral to the brand’s identity that without it, Omega would be like an ocean without its currents – vast, yet lacking its true pulse. Read more at The Business ...

The vintage style is revived courtesy of Cartier’s Tank à Guichets, but it's not the only noteworthy model - here's our favourite guichet watches.

It is one of four pieces made exclusively for a single collector and could fetch more than its top estimate of $1.6 million.