Additional information
| Brand: | IWC |
|---|---|
| Family: | Grande Complication |
| Reference: | IW9270-14 |
| Name: | Grande Complication 3770 Platinum / Silver / German / Bracelet |
| Produced: | 1993 - 2010 |
| Limited: | No |
Case
| Material: | Platinum |
|---|---|
| Glass: | Sapphire |
| Back: | Closed |
| Shape: | Round |
| Diameter: | 42.20 mm |
| Height: | 16.30 mm |
| W/R: | 10.00 m |
Dial
| Color: | Silver |
|---|---|
| Indexes: | Stick / Dot |
| Hands: | Dauphine |
Description
IWC introduced its first 'Grande Complication' wristwatch at the 1990 Basel watch fair. Building upon the platform that Kurt Klaus' perpetual calendar module had provided them, IWC went ahead and added a minute repeater to the already complex movement. The case measured 42.2mm across at a height of 16.3mm, making it of considerable size - especially at the time of introduction.
Reference IW9270-14 is part of the second generation of Grande Complication's, being distinguished by the updated dial design and 'dauphine' hands.
Movement
The IWC Calibre 79091 has been developed in 1991 and made up from base: Valjoux 7750 plus additionally the in-house made IWC perpetual calendar module & the in-house made IWC minute-repetition mechanism
The movements are decorated, assembled and regulated in Schaffhausen.
| Type: | Automatic |
|---|---|
| Brand: | IWC |
| Caliber: | 79091 |
| Base: | ETA7750 |
| Display: | Analog |
| Jewels: | 75 |
| Reserve: | 44 h |
| Frequency: | 28800 bph |
| Time: | Hours, Minutes, Small Seconds |
| Date: | Date, Day, Month, Perpetual Calendar, Year Indicator |
| Chronograph: | Chronograph |
| Astronomical: | Moonphase |
| Acoustic: | Minute Repeater |
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