Grönefeld 1941 PRINCIPIA AUTOMATIC RHODIUM DIAL
- Regular Price
- $47,400
The Grönefeld 1941 Principia Automatic is offered with an array of dials, all crafted in solid sterling silver. The would-be wearer can choose from a cream lacquered dial with roman numerals, a refreshing matt turquoise or light blue dial with polished applied baton hour markers. Alternatively, the company's rhodium plated or gold plated salmon dials are also available.
The Principia is housed in the company's 1941 case. Named after the year their father Sjef was born, the 1941 case exudes grace from every angle. It is available in red gold, white gold or stainless steel. A sapphire case back has been fitted to confer a spectacular view on the extensively hand finished movement with their well known stainless steel bridges and a 22K solid gold oscillating weight.
Each movement is finished and assembled by hand. To emphasize the manual labour involved a gold plate, engraved with an individual number, is applied to the movement.
TECHNICAL SPECIFICATIONS
Movement
| Movement dimensions | Diameter: 32,0 mm Thickness: 5,5 mm |
| Number of parts | 226 parts |
| Power reserve | 56 hours |
| Number of jewels | 31 jewels, partially set in solid gold chatons |
| Automatic system | Uni-directional winding mechanism. For 24 hours of autonomy 633 rotations of the Oscillating mass are required |
| Oscillating mass | Entirely decorated by hand. 22 karat solid gold. Pivoted on a high precision ceramic ball bearing to avoid excessive wear and the need of lubrication |
| Balance wheel | Variable-inertia balance wheel with four white gold timing screws (diameter 10 mm) |
| Frequency | 21.600 vibrations/hour |
| Balance spring | Free sprung with Phillips terminal over coil curve with triangle hairspring stud |
| Escapement | Jewelled Swiss lever |
| Main Plate | Spotted and ruthenium electroplated brass main plate |
| Bridges | Stainless steel, bevels polished by hand, micro-blasted center, circular grain on the top to highlight the bridges shapes and relief engravings |
| Displays | Central hours and minutes Small seconds at 6 o’clock |
Case and dial
| Case dimensions | Diameter: 39,5 mm Thickness: 10,5 mm |
| Water resistance | 3 atmospheres – 30 meters – 100 feet |
| Material | White Gold Au750/Pd210 (Non Rhodium plated), Red Gold Au750 5N or Stainless Steel Engraving: Grönefeld and the individual number |
| Dial | Base material: Solid Sterling Silver 925 |
| Crown | Case matching material, engraved with The Horological Brothers logo |
| Hands | Extended Lancette hands. Flame-blued steel and mirror polished centres. Small poised seconds hand |
| Strap | A vast variety of leathers and colors are available |
| Buckle | Pin buckle made in Red Gold Au750 5N, White Gold Au750/Pd210 (non rhodium plated) or Stainless Steel 916L engraved with Grönefeld |
| Crystals | Domed sapphire crystal on the front with hard anti-reflective coating on both sides Flat sapphire crystal on the back with hard anti-reflective coating on both sides |
| Number of components | 54 parts |
| Total weight | Stainless Steel 74 Grams Red Gold 97 Grams White Gold 97 Grams |
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• Two Full-time master watchmakers in house
• A Full-time master goldsmith in house
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