Dorset 17 Jewels vintage dive watch (not authenticated)

This is a vintage mechanical wristwatch with a dive-style bezel, featuring a black dial and a matching dark fabric or canvas strap. The watch has a round silver-tone metal case, likely chrome-plated base metal or stainless steel, paired with a rotating bezel marked with Arabic numerals for minute tracking. The dial features a mix of luminous numeric markers at the 12, 3, 6, and 9 positions, along with baton or dot hour markers. Text on the dial is clearly legible and reads "DORSET 17 JEWELS" in white lettering. The hands are luminous pencil-style hands with a central sweep seconds hand. The watch shows significant signs of wear, age, and environmental exposure, including heavy dirt, grime, and surface scratching on the crystal and case. The buckle on the strap exhibits verdigris and green corrosion, indicating moisture exposure over time. The identification of the brand rests entirely on the visible text printed on the dial. The piece stylistically resembles mid-20th century skin diver watches from the 1960s or 1970s, though no specific production year or model number can be verified from the exterior imagery alone. The item is unauthenticated and presented in as-found condition.

Based on what I can see in the provided imagery, this appears to be a vintage mechanical wristwatch bearing the text 'DORSET 17 JEWELS' on the dial, stylistically consistent with mid-20th-century skin diver watches from the 1960s or 1970s. However, I can't verify from a photo whether the branding, components, or internal movement are entirely correct or historically aligned with the purported maker. The watch exhibits heavy wear, dirt, grime, surface scratching on the crystal, and verdigris corrosion on the buckle, indicating significant environmental exposure. My valuation range of $100-$200 assumes the piece functions as a vintage mechanical watch of this type and period. General market demand for vintage entry-level mechanical dive watches from lesser-known brands is modest, driven largely by collectors of restoration projects. Physical inspection, movement examination by a watchmaker, and research into the brand history would be needed to confirm authenticity and mechanical integrity. If the item turns out to be a modern replica, a non-working parts watch, or simply 'in the style of' rather than a period-correct piece, the value would decrease significantly, likely falling into the $25-$50 range solely as a decorative or scrap item.