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Swiss Guildcraft by Gruen and Helbros Stem Wind Wristwatches

Item Details

Watchmaker: Gruen
Dial Markings: Guildcraft
Bezel Metal and Crystal Type: Base Metal
Caseback Metal Type: Stainless Steel
Movement: Signed Gruen Watch Co. N 510 CA, 17 Jewels
Markings On Inside: Stainless Steel Back, Gruen Watch Co. Switzerland
Functions: Date Window

Material: Stainless Steel
Style/Type: Speidel Expansion
Clasp Style: Deployment Clasp
Bracelet Length: 7

Watchmaker: Helbros
Bezel Metal and Crystal Type: Base Metal
Caseback Metal Type: Stainless Steel
Movement: ST 96 Stem Wind, 7 Jewels
Markings On Inside: Helbros Watches Swiss

Material: Leather
Style/Type: Strap
Clasp Style: Buckle
Markings on Bracelet: Fossil
Bracelet Length: 9.25

Watchmaker Code: CINCMEW
  • Timekeeping accuracy not guaranteed.
  • This item has been evaluated and verified by an independent Certified Master Electronic Watchmaker.
  • EBTH assumes all watches unisex and does not specify the gender of a piece. For size reference, please see the case measurements of the piece listed under Dimensions.
    Standard women’s sizes run between 26mm and 38mm.
    Standard men’s sizes run between 38mm and 50mm.
  • 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; where mountings impede accurate measurements, a calculated estimate is provided. Industry standard and accepted treatments for gemstones are assumed unless otherwise noted.
  • Secondhand jewelry may contain minor markings/imperfections throughout.

Terms & Conditions


- both watches are running at time of evaluation without detailed testing, future state not guaranteed.
- Gruen: crown is worn.
- crystal is fogged.


- lug to lug measurements range from 41.50 mm – 43.00 mm.
- case width measurements range from 34.00 mm – 34.00 mm.
- bracelet lengths range from 7.00” – 9.25” including case.

Item #



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