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18K Piaget 1.30 CTW Diamond Back Wind Wristwatch

Item Details

Brand: Piaget
Type: Wristwatch
Model Number: Ref.# 3621
Serial Number: 14X,XXX
Lug to Lug (mm): 19.5
Case to Case (mm): 22
Bezel Material: 18K White Gold
Case Material: 18K White Gold
Caseback Material: 18K White Gold
Total Weight (grams): 61.50
Movement: Piaget 6N Backwind & set (serial number – 676642)
Estimated Production Year: 1950s
Markings to Inside: Piaget Swiss 0.750 (Helvetia head and # 15 key of Geneva – hallmarks)
Bracelet/Fob Material: 18K White Gold
Bracelet/Fob Style: Mesh
Clasp Style: Fold Over
Total Length: 6.25"
Primary Stone(s) Location: Bezel
Primary Stone(s) Type: Diamond
Primary Stone(s) Shape: Round Brilliant Cut
Primary Stone(s) Dimensions: 2.50 – 2.70 mm
Total Primary Stone(s) Carat Weight: 1.30 ctw
Primary Stone(s) Color Grade: H – I
Primary Stone(s) Clarity Grade: SI1 – I1
Primary Stone(s) Gemologist Note: Surface reaching inclusions and surface reaching fractures
  • This item has been evaluated and verified by a GIA Graduate Gemologist.
  • All diamond and gemstone grading is done under GIA standards as the mounting permits, where gemstones are present; where mountings impede accurate measurements, (estimated) dimensions are provided. All weights and measurements are estimated and approximate. Treatments for jadeite and other gemstones are assumed unless otherwise noted.
  • Jewelry may contain minor markings/imperfections throughout.
  • While we represent items accurately on our site to the best of our ability, the color calibration of computer monitors can vary, causing colors to appear slightly different from one monitor to another. Due to this, please note that precise color representation of metal and gemstones is not always possible.


- running at time of evaluation without detailed testing, future state not guaranteed.
- the diamond bezel is aftermarket.
- signed bracelet.
- the dial is refinished.

Item #


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