RSB Quartz Gold-Tone Analog Wristwatch with Expansion Bracelet
Watch (Men’s/Unisex Dress Watch) · Yellow Gold Tone; likely a brass or stainless steel base with a thin decorative coating to simulate 14K or 18K yellow gold.
Purity: Non-solid; Base metal with gold-tone electroplating or Physical Vapor Deposition (PVD) coating. Gold content is negligible (<0.1%).

Type
Watch (Men’s/Unisex Dress Watch)
Purity
Non-solid; Base metal with gold-tone electroplating or Physical Vapor Deposition (PVD) coating. Gold content is negligible (<0.1%).
Gold Type
Yellow Gold Tone; likely a brass or stainless steel base with a thin decorative coating to simulate 14K or 18K yellow gold.
Weight
80-110 grams (total weight including movement, case, and bracelet). The weight is primarily from steel and internal components, not precious metal.
Description
This is a classic analog dress watch featuring a gold-finish case and a sunray gold dial. The 'RSB' branding suggests a fashion-tier timepiece designed for daily wear. It utilizes a day-date complication and thin stick hands for a minimalist aesthetic, paired with a traditional expansion band that offers comfort and ease of use without the need for a buckle.
Key Features
Day-date display, sunray finish dial, integrated expansion bracelet, and 3 ATM water resistance rating.
Color & Finish
Uniform pale yellow gold color; high-polish finish on the case and bezel; brushed/satin finish on the horizontal segments of the expansion bracelet link tops.
Hallmarks & Stamps
RSB logo on dial; '3 ATM' water resistance marking; likely 'Stainless Steel Back' and 'Japan Movement' or 'China' on the case back (not visible in image). No karat hallmarks (e.g., 14K, 585) are present, indicating non-precious construction.
Dimensions Estimate
Case diameter: 38-40mm; Lug width: 18-20mm; Band: Standard men's expansion size.
Gemstones & Inlays
None; features applied faceted gold-tone baton indices and a day-date window at the 3 o’clock or 9 o’clock (inverted) position.
Clasp & Closure
Expansion Bracelet (Speidel-style); a continuous elasticated metal band with no clasp, designed to stretch over the hand and retract on the wrist.
Chain & Links
Horizontal flat-link expansion construction; U-shaped internal staple connectors with spring-loaded mechanism for flexibility.
Craftsmanship Details
Machine-pressed links and a snap-back case construction. The movement is a standard mass-produced quartz module. The plating is applied evenly but is thin, typical for fashion-tier manufacturing.
Authentication Indicators
The lack of Karat hallmarks, the presence of a '3 ATM' water resistance stamp on a dial, and the use of an expansion band are definitive indicators of a non-solid gold fashion watch.
Origin & Maker
Origin: Likely China; Maker: RSB (typically a private label or mass-market fashion watch brand).
Era & Period
Contemporary (2010s-present) with Retro/Mid-Century Modern styling influences.
Age Estimate
Likely 5–10 years old; consistent with modern mass-produced quartz fashion accessories.
Cultural Significance
Represents the 'affordable luxury' movement where consumers can achieve the aesthetic of a solid gold watch through plating and quartz technology at a fraction of the cost of precious metals.
Condition Notes
Very Good/Excellent; the gold-tone plating shows no visible 'brassing' or wear-through on the high-friction edges of the bracelet. The crystal appears clear of scratches.
Value Estimate
$20.00 - $50.00 USD (Resale value). The item has no 'melt value' as it is not made of solid gold.
Care & Maintenance
Clean with a soft, damp cloth. Avoid immersion in water despite the 3 ATM rating; avoid perfumes and lotions which can corrode the gold plating over time. Battery replacement required every 2-3 years.
Similar Items
Seiko SGF719 (Gold Tone), Casio MTP series, or vintage Speidel-equipped Timex watches.
Interesting Facts
Expansion bands were popularized in the mid-20th century by Speidel and were nicknamed 'Twist-O-Flex' bands due to their extreme durability and flexibility.