Automatic wristwatch in the style of a Patek Philippe Aquanaut

This item is an automatic wristwatch featuring a stainless steel case with a rounded octagonal bezel and a brushed finish. The dial is dark (appears black or deep brown) with a geosphere-inspired embossed pattern and bears markings that read 'PATEK PHILIPPE' and 'GENEVE' below the 12 o'clock position, as well as 'SWISS MADE' at the bottom. It features luminous Arabic numerals and a date window at the 3 o'clock position reading '26'. The watch is fitted with a black composite strap with a 'Tropical' style embossed texture. The user categorizes this as a 'Watch'. While the visible logos are consistent with a Patek Philippe Aquanaut 5167A series, this identification is treated as a hypothesis subject to in-person verification. No physical inspection has been performed to verify the movement, weight, or craftsmanship standards of the brand. The item appears to be in used condition with minor surface scratches on the bezel. It is pictured on a wrist alongside a multi-colored gemstone band, which the user has not identified.

This item is an automatic wristwatch bearing markings consistent with a Patek Philippe Aquanaut 5167A. Based on what I can see in the provided image, it possesses the distinct rounded octagonal bezel and 'Tropical' composite strap characteristic of the model. However, I cannot verify the movement's integrity, metallurgical composition, or specific craftsmanship standards through a photograph alone. All identifications made here are treated as a working hypothesis subject to physical examination. The estimated value of $40,000 to $65,000 assumes the item is an example of the aforementioned brand; this range reflects the high global demand for stainless steel sport watches of this caliber in used condition with minor surface scratches. To confirm this valuation, an in-person inspection by a specialist is required to examine the caliber 324 SC movement, the weight, and the precise finishing of the steel. I would also need to review provenance documentation, such as the original certificate of origin or service records. It is important to note that the market for this specific style is saturated with high-quality replicas. If a physical inspection determines this piece to be a contemporary reproduction, replica, or 'in the style of' the brand, the value would decrease significantly, typically falling into a range of $100 to $500 as a decorative timepiece. The gemstone band pictured alongside the watch was not evaluated as its materials could not be identified.