The Grönefeld 1941 Principia Automatic is a masterpiece of independent Dutch watchmaking, blending scientific inspiration with extraordinary hand-finished craftsmanship. Created by the renowned horological brothers Bart Grönefeld and Tim Grönefeld, this elegant timepiece embodies precision, artistry, and timeless design.

Inspired by Philosophiæ Naturalis Principia Mathematica by Isaac Newton, the Principia reflects the pursuit of mechanical perfection. Its beautifully balanced dial, refined proportions, and exceptional hand-finished movement make it one of the most desirable creations from the independent Dutch brand Grönefeld.

This 2022 pre-owned example in excellent condition features the highly sought-after salmon dial, paired with a polished stainless steel 1941 case and a refined blue leather strap. Complete with box and papers, it is a compelling addition to any serious watch collection.

Key Features

Elegant 1941 Case Design

The signature 1941 case is named after the birth year of the Grönefeld brothers’ father, Sjef. Crafted in stainless steel, its sculpted architecture features concave recesses and convex surfaces achieved through multiple stages of precision milling and polishing.

With a 39.5mm diameter and slim 10.5mm profile, the case offers a perfectly balanced presence on the wrist—refined, elegant, and comfortable for everyday wear.

Exceptional Dial Craftsmanship

The salmon dial, made from solid sterling silver, delivers warmth and sophistication. Polished applied baton hour markers complement the extended flame-blued Lancette hands with mirror-polished centers.

At 6 o’clock, a beautifully executed small seconds subdial adds symmetry and visual depth, while the flame-blued seconds hand glides effortlessly with graceful poise.

Hand-Finished Automatic Movement

Through the sapphire caseback, the movement reveals the hallmark craftsmanship of Grönefeld.

Highlights include:

• Hand-finished stainless steel bridges
• 22K solid gold oscillating weight
• Individual gold plate with engraved movement number
• Meticulous hand assembly and decoration

The automatic movement delivers a 56-hour power reserve, combining reliability with exquisite finishing rarely seen at this level.

Thoughtful Case Engineering

Each lug is secured with hidden titanium screws inside the case, allowing them to be removed for refinishing or replacement if necessary—an example of the brand’s dedication to long-term serviceability and precision engineering.

Product Specifications

• Brand: Grönefeld
• Model: Grönefeld 1941 Principia Automatic
• Reference: 1941 Principia
• Year: 2022
• Condition: Pre-owned – Excellent
• Inclusions: Watch, original box, and papers
• Case Material: Stainless Steel
• Case Diameter: 39.5 mm
• Case Thickness: 10.5 mm
• Crystal: Sapphire
• Water Resistance: 3 ATM
• Dial: Salmon
• Dial Markers: Baton / Lines
• Hands: Flame-blued Lancette
• Bracelet/Strap: Blue Leather
• Movement: Automatic
• Jewels: 31
• Power Reserve: 56 Hours

Functions:

• Central hours and minutes
• Small seconds at 6 o’clock

Why Collectors Love the Grönefeld Principia

• Independent haute horlogerie from Grönefeld
• Exceptional hand-finished movement with stainless steel bridges
• Rare and highly collectible salmon dial configuration
• Elegant wearable size at 39.5mm
• Complete box and papers set