1 in stock

Gruen Precision Auto-Wind Copper Dial in Stainless Steel Cal. 400

$580.00

Gruen Precision Auto-Wind in stainless steel, powered by the in-house Caliber 400 automatic movement with 17 jewels. The dial has aged to a stunning tropical copper and amber tone, featuring applied arrow-shaped indices, Arabic numerals at the quarters in Gruen’s signature art deco typeface, and a subsidiary seconds register at 6 o’clock with a fine concentric guilloche pattern. The black pencil-shaped handset retains its original lume, and the minute hand is accented with a distinctive blue arrow tip. Housed in a svelte Veri-Thin stainless steel case with a stepped bezel and Guildite anti-magnetic inner case back, presented on a brown lizard-grain leather strap.

1 in stock

1 in stock

General

Brand
Model LinePrecision
ManufacturedSwitzerland
DepartmentMen
Dial ColorCopper

Case

Case ShapeRound
BezelFixed
Case MaterialStainless Steel
Case Width32.3mm
Case Height40mm

Strap / Bracelet

Lug Width16mm
Strap MaterialLizard
Strap ColorBrown
ClaspBuckle
Max Wrist Size8.5″

Movement

MovementAutomatic
CaliberGruen 400
Accuracy< 10 secondsThe movement showed a daily accuracy deviation ranging from 0 to 10 seconds across six positions.

Extras

Warranty2-Year Ottuhr WarrantyOur standard two-year mechanical warranty which covers the mechanical functions and accuracy of the timepiece.
Original BoxNo
Original PapersNo

Overview

Gruen is one of those names that, in our opinion, doesn’t get nearly enough love in today’s collector conversation. For decades in the early-to-mid twentieth century, Gruen was arguably the most prestigious watch brand in America, a household name that graced the wrists of presidents and professionals alike, and even lent its name to the iconic Gruen Watch Company Building in Times Square. It’s wild to think that a brand once so dominant could slip into relative obscurity, but that’s precisely what makes finding a good Gruen today feel like discovering buried treasure.

The story of Gruen is fundamentally a transatlantic one. Founded in Cincinnati by German-born watchmaker Dietrich Gruen in 1894, the company took the bold step of establishing its own movement factory, the “Precision” facility, in Biel/Bienne, Switzerland, the beating heart of the Swiss watch industry. This gave Gruen something almost no other American brand could claim: genuine Swiss-made movements bearing their own name, developed and produced under their own roof. The “Precision” line, as denoted on the dial, represents the pinnacle of that philosophy, watches built with Swiss craftsmanship specifically for the discerning American market. The Caliber 400, the automatic-winding movement inside this piece, was part of Gruen’s celebrated Veri-Thin series, a line that prioritized slim, elegant proportions at a time when many automatics wore thick and ungainly on the wrist. With 17 jewels and a patented winding system, it was a robust and refined engine that spoke to Gruen’s engineering ambitions.

This particular example is, to put it plainly, a showstopper, and the dial is the reason why. What was almost certainly a more restrained silver or light salmon tone when it left the factory has, over the course of many decades, undergone a remarkable tropical transformation into a rich, variegated copper and amber. The color shifts beautifully across the surface, deeper and more burnished toward the center, lighter and almost peachy near the periphery. It’s the kind of organic, unrepeatable aging that collectors spend years searching for. The applied arrow indices retain their original profiles, catching light against that warm backdrop, while the Arabic numerals at the quarters, rendered in Gruen’s wonderfully stylized art deco typeface (note that fantastic swirled “9”), give the dial a personality that feels distinctly of its era. The subsidiary seconds register at 6 o’clock features a finely engine-turned concentric pattern that adds another layer of visual depth. The original pencil-shaped handset is intact, with the lume inserts having aged to a warm, creamy tone that harmonizes perfectly with the dial, and that distinctive blue arrow on the minute hand is a subtle but delightful accent.

The stainless steel case presents in honest, well-loved condition. The stepped bezel retains its clean lines, and the profile reveals just how slim the Veri-Thin design philosophy really was, this watch sits remarkably flat on the wrist. The lugs show some gentle softening from years of wear but remain well-defined, and the caseback carries the expected tool marks from past servicing, along with the Gruen signature. Pop that caseback off and you’re greeted by the Guildite inner dust cover, Gruen’s proprietary anti-magnetic shielding stamped “Brevet +” (Swiss patent), a lovely detail that speaks to the brand’s attention to the unseen as well as the seen. The Caliber 400 itself is beautifully finished with côtes de Genève striping on the rotor and bridges, gilt lettering, and jeweled bearings that are all clearly visible and appear to be in fine shape.

This is the kind of watch that rewards the collector who looks beyond the usual suspects. It offers genuine mid-century American watchmaking heritage, a Swiss-made automatic movement from a brand’s own manufacture, and a dial that is, frankly, impossible to replicate. It wears effortlessly with its slim case proportions, pairs beautifully with a tweed jacket or rolled shirtsleeves alike, and represents a fantastic entry point into a historically significant brand that the broader market hasn’t fully caught up to yet. To us, that’s about as compelling a value proposition as you’ll find in vintage watches today.

Timing: The watch has been measured with a timegrapher at six different positions. The rate, amplitude, and beat error are within acceptable ranges.

Functions: All functions including the crown winding, time setting, etc are working as expected.

Integrity: The movement shows no signs of damage, rust, or corrosion, with all components appearing clean and well-maintained.

Authenticity: Each timepiece is evaluated and authenticated in-house. This watch is guaranteed to be correct to its manufacturer and time period.

Warranty: This timepiece includes a 2-year mechanical warranty, activated upon the date of purchase. Warranty Policy

Shipping: This timepeice includes complimentary insured shipping within all 50 states, and options for expedited shipping. Shipping Information

Returns: If, for any reason, you are not entirely satisfied with your purchase, you may return the product for a full refund within 30 days from the date you received or signed for the item. Read our Return Policy

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