Girard-Perregaux Deep Diver 7897 Variants

The Girard-Perregaux Deep Divers reference 7897 represents the second generation of the Deep Diver line. This iteration introduced a one-piece metal turning bezel, distinguishing it from the earlier non-bezel models. The 7897 also featured some enhancement of the luminous markers compared to its predecessor, indicating an evolution in design towards improved legibility. This reference is part of a series that aimed to offer automatic movements, differentiating it from the manual-wind Sea Hawk line which was also in production at the time.

The case of the Deep Divers 7897 is constructed from steel, providing a robust housing for its automatic movement. While specific dimensions are not provided in the extract, the watch is noted to be somewhat stronger in appearance than other Girard-Perregaux Gyromatic models of the era. The dial features applied steel numerals and indexes, with small luminous dots at each index and a slightly larger luminous triangle at the numbers. Steel Dauphin hands include a thin line of luminous material.

This reference appeals to collectors interested in the development of Girard-Perregaux's water-resistant timepieces. It marks a significant step in the Deep Diver series, showcasing the introduction of a functional turning bezel. The evolution of luminous material and bezel design across the four generations of Deep Divers provides a clear lineage for collectors to trace the brand's approach to dive watch features.