Don't miss the next drop
The Gruen Curvex is one of the most ingenious designs in American watchmaking history. While most manufacturers of the 1930s and 1940s were content to drop round movements into rectangular cases, leaving wasted space and awkward proportions, Gruen took an entirely different approach. They developed a curved movement, literally bent to follow the natural arc of the wrist, and built a case around it. The result was a watch that sat flush against the skin with a slim, elegant profile that round-cased competitors simply could not match. It was a patented innovation, and it remains one of the most recognizable silhouettes in the vintage watch world. The Curvex was not a niche curiosity; it was Gruen’s flagship, the watch that defined the brand, and it sold in enormous numbers throughout the 1940s and 1950s to a clientele that included everyone from returning GIs to Wall Street executives.
The cal. 370 inside this example is the movement that makes the Curvex what it is. Signed “Gruen Watch Co, Precision, Curvex Pat, Switzerland, Seventeen 17 Jewels, Unadjusted,” it is visibly curved when seen from the side, with the entire train and mainspring arranged along the longitudinal axis of the case rather than radially as in a conventional round movement. The movement is visible with the caseback removed for photography, showing clean plates with gilt text and visible jewels. It’s a genuinely beautiful piece of mechanical engineering, and the “Precision” designation on both the movement and the dial indicates Gruen’s higher-grade finishing standard.
This particular example features the faceted pyramid crystal, which is one of the most visually striking details on any Curvex variant. Rather than a flat or simple domed crystal, this one is cut with angular facets that catch and refract light differently depending on the viewing angle. It gives the watch a presence that photographs struggle to fully capture; in person, the crystal plays with light in a way that draws the eye constantly. The silver dial carries “Gruen Curvex” in the upper half with applied gold spearhead markers at the hours and Arabic numerals at 12 and 6. The sub-seconds register at 6 o’clock is framed within a diamond shaped surround with “Precision” printed above it, a lovely period detail. The gold hands are original and show their age with gentle darkening of the luminous material.
The 10K gold filled Wadsworth case shows honest wear consistent with eight decades of life. The profile shots reveal the signature Curvex curve beautifully, and the case retains crisp edges along its rectangular frame. The outer caseback is stamped “Gruen, 10K, W Gold Filled” with the Wadsworth hallmark, and the inner caseback reads “Cased and Timed in U.S.A. by Gruen Watch Co, Wadsworth, 10K Gold Filled, L101542, 370-601.” There is some green verdigris visible at the case edges where the gold fill meets the base metal, which is typical for gold filled cases of this era and does not affect the structural integrity. The Gruen signed crown is original.
Paired here on brown leather strap that complements the gold tones perfectly, this Curvex is a masterclass in 1940s American design. The combination of the curved case, the pyramid crystal, and the balanced dial layout makes it one of the most distinctive vintage watches you can wear today, and at a fraction of what comparable rectangular dress watches from the Swiss houses command.
