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IWC watch R811 Yacht Club International Watch Co. Schaffhausen Cal 8541B
IWC watch R811 Yacht Club International Watch Co. Schaffhausen Cal 8541B
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SPECIFICATION
Reference : IWC R811
Movement : Calibre 8541B
Age : 1968
Case Size : 36mm
Case Thickness : 12mm
Lug to Lug : 43mm
Lugs : 18mm
Condition : used IWC watch
Box & Papers : No
Case Material : Stainless Steel
Warranty : 12-Months Warranty
POINTS TO MENTION
- In great pre-owned condition, with some wear from use
- Fully serviced movement
- Case and bezel have some scratches and marks
- Small ding in the bezel and lug
- Scratches to lugs and case back shows age
- Slight paint loss by 10 o'clock indices.
- IWC signed fish crown
- Paired with an unworn blue leather strap
THE WATCH
IWC introduced the Yacht Club in 1967 under reference number R811 as a sporty alternative to the Ingenieur collection. An elegant barrel-shaped case defines this 36-mm stainless steel or yellow gold timepiece. IWC equips these watches with their automatic in-house caliber 8541 that has a beat rate of 19,800 and 23 jewels, This efficient movement has a highly sophisticated shock-absorption system . In this two-tier system, the caliber is suspended on springs and surrounded by rubber buffers. The final result is an extremely robust timepiece. The stainless steel models are water resistant to 100m, while the gold editions can dive down to 60m. Alongside the Yacht Club, the Polo Club, and the Golf Club were also released as part of IWC’s ‘Club Series’ in the late 1970s.
A BIT OF TRIVA
An automatic watch keeps running only because of the movements of the wearer’s arm. For 60 years now, the power driving IWC’s automatic in-house movements has come from the pawl-winding system developed by Albert Pellaton and improved continuously ever since. In an automatic watch, the rotor converts kinetic energy into potential energy for the spring like in this cal. 8541B.
At IWC, the automatic system is inseparably linked with Albert Pellaton, he was appointed Technical Director to the Schaffhausen-based company in 1944 and made the development of an efficient automatic winding system his top priority. From a design point of view, the difficulty lay in converting the rotor’s bidirectional movements into a unidirectional winding motion that would put the mainspring under tension. Most systems back then either diverted the rotor’s movements to a complicated transmission or used only rotations in only one direction to wind the movement. This resulted in considerable power and energy loss.
Pellaton hit upon a surprising solution, instead of putting a ball bearing or cog at the centre of the rotor, he used a heart-shaped, eccentrically bearing-mounted disc. The latter converts the rotor’s revolutions into the to-and-fro movements of a rocking bar. The bar’s rocking movements are then transmitted to the winding wheel by two pawls: while one of them pulls the wheel (i.e. winds it), the other glides smoothly over the top of it until the roles are reversed. The mechanism patented in 1950 is unusually efficient. The rotor’s smallest movement in either direction is used to wind the mainspring
OUR THOUGHTS
The IWC Yacht club that we have in store represents a blend of classic design, mechanical innovation, and superior craftsmanship. It stands as a testament to IWC's ability to innovate while honoring traditional watchmaking values, making it a prized piece for aficionados and a reliable timekeeper for everyday wear.
SKU:IWCYC196WO2




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