Girard-Perregaux, often times referred to as G-P, is a Swiss watch manufacturer founded in 1854 when Constant Girard married Marie Perregaux. G-P is one of the few true manufacturer’s in the watch industry, meaning they produce all of the movements for their watches in house. Their most famous watch is the Three-Bridge Tourbillon, while their most popular collections are the Vintage line, the Cat’s Eye line, the World Financial line and the Laureato Evo line.