Art. No. 1157 Basic information Manufacturer: Omega Model: 2639 Winding: Mechanical, manual wind Lug to lug 43 mm Diametre excluding crown: 35 mm Height (highest point): 10 mm Strap width, Attach/Buckle: 18/16 mm Strap size, Long/Short: 120/80 mm Data Year (not validated by manufacturer): 1953 Serial no: 13808107 REF.no/Case no.: 2639-15 Jewels: 17 Looks and materials Strap material: Leather with rubber inner material Strap color: Brown Case type: Screw down case, 2 parts Case material: Stainless steel Crystal material: Acrylic Dial: Zonal dial Buckle material: Stainless steel Movement and meassurements (meassured in 6 positions) Caliber: CAL 266 Average time deviation (sec / day): 9 Average amplitude (degrees): 252 Average beat error (ms): 1,0 Frequency (bph): 18000 Stated powerreserv*: 44 h Extended information Service, hands: Original hands** Service, case: Cleansed case in original state** Service dial: Dial in original state** Service, buckle: Buckle/Clasp not exchanged by Marcels Watch Group Service, crown: Original crown** Service, crystal: New crystal, Sternkreuz Service strap/bracelet: Nytt Hirsch Strap Service, movement: Miniservice Accessories Service documents: Yes Appraisal: Yes Box: No box Certificate: Certificate from Marcels Watch Group Grading and assessments Color grade dial: Faint Damage grade dial: DG1 Condition case: NP-DG Overall impression: Grade A Warranty***: 12 months Remark: Dial with patina throughout Other *Deviation is to be anticipated **Originalpart mounted on the watch when purchased, no guarantee that it is factory original ***Function warranty, i.e. the functions is guaranteed to work during this time given that the watch is treated within the guidelines of treatment. In the event of outer mischief, warranty is not applicable See https://www.marcelswatch.com/en/vintage-guide/ for grading information See https://www.marcelswatch.com/en/vintage-guide/ for grading information Information from official webbsite: https://www.omegawatches.com/en-gb/watch-omega-other-omega-ck-2639
