Vintage Cartier Santos-Style Octagonal Wristwatch

A vintage-style dress watch featuring a distinctive octagonal case design evocative of the classic Cartier Santos series. The timepiece is constructed with a two-tone aesthetic, showcasing a polished silver-toned (likely stainless steel) main case body topped with a contrasting gold-toned bezel secured by visible exposed screws at each facet—a hallmark of industrial-chic luxury design from the late 20th century. The dial is white with black Roman numeral hour markers and slender dark hands. It is paired with a black textured leather strap, possibly lizard or calfskin with an embossed grain, which exhibits significant signs of wear and age-related hardening. The crystal appears intact but may have minor surface scratches consistent with use. The overall condition shows visible patina and oxidation on the metal surfaces, particularly around the bezel screws. This style was highly popular in the late 1970s and 1980s, reflecting a period of refined geometric horology. The craftsmanship is evidenced by the flush mounting of the bezel and the clean integration of the lugs with the strap. Further authentication would be required to determine if it is a genuine Cartier piece or a high-quality contemporary homage from that era, as maker's marks on the dial are obscured by the low image resolution.

Upon visual inspection of the images provided, I have examined this octagonal two-tone wristwatch reminiscent of the Cartier Santos Ronde collection. The piece captures the quintessential 1980s aesthetic, featuring a high-contrast gold-toned bezel with exposed screws against a stainless steel case. My primary concern regarding value rests on the current inability to confirm the manufacturer’s signature. If this is a genuine Cartier 'Godron' or 'Santos Ronde' quartz model from the 1980s, the lower estimate holds even with the observed heavy oxidation and strap degradation. If it is a period-authentic 'homage' by a secondary maker (such as Seiko or Lassale), the value resides at the lower end of the spectrum, approximately $150-$300. The condition shows significant surface oxidation and 'pitting' on the gold-toned bezel, which suggests it may be gold-plated rather than solid gold. The leather strap is in a state of advanced perishability and requires immediate replacement. Market demand for neo-vintage geometric watches is currently high, but 'parts-only' condition or unbranded status limits liquidity. Critically, this appraisal is subject to physical verification. I cannot confirm the movement type (quartz vs. automatic) or the authenticity of the dial from these images. Full authentication would require an in-person loupe inspection of the 'Cartier' micro-printing often found in the VII or X numeral, a view of the case back engravings, and a movement serial number check. Provenance documentation or the original 'red box' would further solidify the upper-range valuation.