Important Modern & Vintage Timepieces
Geneva, May 10, 2025
LOT 225
OMEGA, SWITZERLAND, OBSERVATORY TRIALS, GUILLAUME BALANCE, STAINLESS STEEL
CHF 3,000 - 5,000
HKD 28,500 - 47,500 / USD 3,700 - 6,200 / EUR 3,300 - 5,400
A rare, stainless steel, manual wind open-face, round-shaped, wristwatch chronometer movement, with subsidiary seconds at 6, made for the observatory timing contests. White enamel dial with “Breguet” numerals. caliber 30 T2, with oversized barrel, lever escapement, Guillaume balance with gold poising screws and blued steel hairspring with terminal curves
| Grading System | |
|---|---|
Grade: AAA |
Excellent |
Case: 3-8 |
Good Slightly scratched |
Movement: 3-6* |
Good Slightly oxidized Overhaul recommended, at buyer's expense |
Dial: 3-01 |
Good HANDS Original |
Brand Omega, Switzerland
Model OBSERVATORY TRIALS
Year circa 1950-1960
Movement No. 12780877
Diameter original aluminium testing case (50 x 45 x 24 mm.)
Caliber 30T2, 17 jewels
Signature Dial and movement