GP is one of the few brands that can call itself a manufacturer, IMO GP signature would always be the "Three Golden Bridge" design which normally only appears in the Haute Horology category model and the pricing is way much higher.
similar like:
Public recognise
Zenith for their El Primero rather than the Defy...
Bell & Ross for their Aviation watch BR01, BR03 rather than the Marine BR02...
Rolex for their sports model Submarine, Daytonna, Explorer rather than the Prince, Cellini...
The golden Bridge design first started with their pocket watch..

which during 2012 they put the design into the Laureato collection where the golden bridge is replace by a rare material known as Spinel.... (The Laureato was introduced at year 1975 to rival against the royal oak)

You could hardly see a Three Golden Bridge model at the AD, the other collection available would be:
the:
Hawk: the diving watch
1945: classic watch with rectangular art deco case
1966: classic watch with round case that is found only in Precious Metal
Traveller: modern watch with World time features
Where I personally like the Chrono Hawk very much
