Important Modern & Vintage Timepieces

Geneva, May 10, 2025

LOT 238

EBAUCHES SA, SWITZERLAND, "BETA 21", 18K YELLOW GOLD

CHF 5,000 - 10,000

HKD 47,500 - 95,000 / USD 6,200 - 12,300 / EUR 5,400 - 10,800

Sold: CHF 6,250

A historically important, large, heavy, 18k yellow gold, electro quartz center-seconds wristwatch with date


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Grading System
Grade:
Case: 2-8

Very good

Slightly scratched

Movement: 2 *
Dial: 2-01

Very good

HANDS Original

Brand Ebauches SA, switzerland

Model "Beta 21"

Year circa 1969

Movement No. 00002775

Diameter 42 x 45 (with lugs)

Caliber Beta 21, 13 jewels

Signature dial, case and movement

Notes

After the initial development of the Beta 1 and Beta 2 movements, the CEH released the new Beta 21 caliber. In order to properly commercialise this new project, a core group was created made up of 2 organisers (CEH and ESA), 3 suppliers (FAR, FBR and FSR) and 15 manufacturers (among them Bulova, Piaget, IWC, LeCoultre, Longines, Rolex, Omega, Patek Philippe). This led to the creation of 6000 Beta 21 calibers distributed among the various brands. Ebauches SA was delivered exactly 210 pieces only and it is the first of its kind to appear at auction, showing how few actually survived.