| MODEL | Seconde Authentique |
| Limitation | 58 pieces |
| Ident No. | 109182 |
| MOVEMENT | |
| Calibre | MB M62.00 |
| Movement type | Manually wound movement |
| Chronograph | – |
| Indications | Central hours and minutes, seconds at 6 o’clock |
| Displays (Chronograph) | – |
| Diameter | 24 mm |
| Height | 3.90 mm |
| Number of components | 162 components |
| Number of jewels | 19 jewels (hemispherical, cambered and olive-cut) |
| Power reserve | Approx. 50 hrs |
| Balance | Screw balance, Ø 9.7 mm; 15 mg.cm2 |
| Frequency | 18,000 vibrations per hour (2.5 Hz) |
| Balance spring | With Phillips curve |
| Plate | Rhodium-plated German silver, circular-grained on both sides, hand-chamfered edges |
| Bridges | Rhodium-plated German silver, “Côtes de Genève”, recesses circular-grained on both sides, hand-chamfered edges |
| Going train | Wheels: gold-plated, circular-grained, chamfered, diamond hubs on both sides Pinions: polished faces and toothing, burnished pivots |
| CASE | |
| Material | 18K Red gold |
| Bezel | – |
| Sapphire crystal | Cambered sapphire crystal |
| Case Back | Sapphire crystal case back |
| Crown | 18K red gold with Montblanc emblem diamond |
| Dial | Silver mother-of-pearl “marqueterie” and 18K gold inlays |
| Hands | 18K red gold |
| Horns | With patented cuvette release mechanism |
| Diameter | 36 mm |
| Height | – |
| Water resistant | 3 bar (30 m) |
| STRAP | |
| Material/Colour | Hand-stitched alligator-skin / White |
| Clasp/Buckle | 18K red gold pin buckle |
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