Omega Seamaster – Two Tone – Bumper – 1949

DKK 9.800,00

SOLD

Information:

  • Model: Omega Seamaster Bumper – Two Tone dial
  • Case : stainless steel
  • Case ref#: 2577-6 H – Acier Staybrite collection
  • Caliber: Ω – 351 – 17 jewels – automatic
  • Serial number: 12.276.253
  • Case number: 2577-6
  • Year of production: 1949
  • Size. 34,5 mm. (ex. crown).
  • Crown: orginal crown

 

Specialities

  • Omega SeaMaster was introduced to the world in 1948. At the time being Omega’ commercial director – Adolphe Vallat – had made a request for an automatic water resistant watch. The inquiry was given forward to Omega’ designer – René Bannwart. Who at the time have had a sketch on the shelf, which was originally intended to become the new Centenary model, which he had to be too found to be too bulky to be an elegant dress watch and as Adolphe Vallat loved the composition the sketch became the design for the first Omega SeaMaster.
  • The Seamaster name is still used by Omega today and these early watches are correctly perceived by enthusiasts as being historically significant as they very much represent the “first of a bloodline”. For the uninitiated, it rather behoves me to explain that the “bumper” nickname given to these particular watches is a reference to their automatic winding rotors. Unlike later Omega watches, these early automatics do not allow for full circular motion of their rotors. Omega engineers at the time calculated that maximum winding efficiency could be achieved by limiting the available rotor travel to roughly 300 degrees. These super movements were entirely hand assembled and built to remarkably high standards.
  • Only experienced Omega watchmakers were involved in the assembly of these movements, due to their high complexity. As the rotor moves backwards and forwards, it is cushioned by a pair of delicate buffer springs.
  • When in use, the wearer can actually feel the rotor impacting against the springs and bouncing back again, hence the “bumper” title ascribed to this particular calibre.
  • Sadly, due to sheer complexity of the movement, and its associated high production cost, despite its super levels of accuracy and performance, the “bumpers” were only produced for a short time, hence their high desirability factor today.
  • For those concerned with Omega reference numbers, the actual movement calibre is calibre 351 and other calibres, possibly the most highly regarded and technically advanced of all the Omega Bumpers.
  • A 1949 “Bumper” Omega Seamaster is the perfect example of a classic watch that would be extremely difficult to find today. The Seamaster model, intended as a rugged, high precision sports watch, was introduced one years earlier in 1948, and rarely are early examples, offered for sale.
  • Band: the watch is mounted on a NOS ( New old stock ) band made from genuine buffalo leather.

 

Rates:

  • Case: 6
  • Caliber: 7
  • Dial: 5

 

Terms and conditions:

*Terms and Conditions apply, according to the Danish Sales of Goods Act (and the CISG).

(Guarentee certificate). For WC classification the following applies:

10: LNIB  9: Mint – 8: Near Mint 7: Excellent 6: Very good 5: Good 4: Fair

To read a closer description visit our website on www.wristchronology.com, grading system)

*In accordance with the Danish Sales of Goods Act we offer 14 day sale or return on used items. However, Wrist Chronology is well aware of the investment involved in acquiring a vintage watch. Thus, we would like to inspire a more secure and trusting experience upon purchasing a vintage time piece.

That is why we, unless otherwise noted, offer a full 1-year (mechanical) warranty on all of our watches.

  • The right to complain covers malfunction (the clock stops running) due to clockwork error.
  • However, the right to complain does not cover malfunction caused by miscarriage or damage.
  • Upon mechanical malfunctions, the watch is to be handed in / sent to our workshop, where we will carry out the necessary repair this as soon as possible.
  • For tolerance connected to mechanical watches, the following values normally apply:
  • +/- 10-30 seconds per day comprising watches both above in and the ‘excellent’ category.
  • For waterproof watches the warranty does not cover water damage, as vintage mechanical watches are exempted from being actually waterproof due to date.

Out of stock

Compare
SKU: OM-SEA-BU-03

Omega Seamaster Bumper – Two Tone

 

SOLD

 

Information:

  • Model: Omega Seamaster Bumper – Two Tone dial
  • Case : stainless steel
  • Case ref#: 2577-6 H – Acier Staybrite collection
  • Caliber: Ω – 351 – 17 jewels – automatic
  • Serial number: 12.276.253
  • Case number: 2577-6
  • Year of production: 1949
  • Size. 34,5 mm. (ex. crown).
  • Crown: orginal crown

 

Omega Seamaster Bumper

Omega calibre 351

Omega Seamaster hammer – Two Tone – Www.WristChronology.com

 

Omega Seamaster Bumper calibres:

  • Omega Seamaster Bumper wind,  a.k.a.hammer wind movements, are early automatics. In today’s automatics, you have what is called a “full rotor” automatic. What this means, is that the rotor can go around the whole movement to wind the mainspring. But back in the early part of the 1900s, they didn’t know how to make a full rotor automatic.
  • The concept of the bumper wind came about in the 1920s by John Harwood. The rotor in a bumper wind swings around about 120-130 degrees. There were two draw backs to this movement, the first one is that it isn’t the best system of winding. It takes a lot of wear to wind one completely. That’s because the rotor, a.k.a. hammer mass, always wants to go in the direction of the mainspring. To compensate for this, watchmakers had to evenly place weights on the bottom part of the rotor. That way when the wearer moves their wrist, the rotor will be pulled away from the barrel bridge so that the watch could wind. The second is that the constant slamming of the rotor on to the winding bridge causes wear on the parts. The term “bumper wind” comes from the bump you feel when the rotor returns to the winding bridge.
  • A 1949 “Bumper” Omega Seamaster is the perfect example of a classic watch that would be extremely difficult to find today. Omega took the rotor in a bumper wind from swinging around about 120-130 degrees to an arrogant 300 degrees.  The Seamaster model, intended as a rugged, high precision sports watch, was introduced only one years earlier in 1948, and rarely are early examples, offered for sale.
Custom Tab Content here.
Tail sed sausage magna quis commodo swine. Aliquip strip steak esse ex in ham hock fugiat in. Labore velit pork belly eiusmod ut shank doner capicola consectetur landjaeger fugiat excepteur short loin. Pork belly laboris mollit in leberkas qui. Pariatur swine aliqua pork chop venison veniam. Venison sed cow short loin bresaola shoulder cupidatat capicola drumstick dolore magna shankle.