Petals & Pinions

CURATED VINTAGE WATCHES

Hamilton Masterpiece Thin-O-Matic

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Here’s a a very elegant Hamilton Masterpiece Thin-O-Matic from the 1960s with a beautiful silver sunburst dial. The Masterpiece series was marketed to businesses and featured in-house caseback engravings and custom dials. This particular reference was presented to Ed Conlon from the BF Goodrich tire company after 30 years of service.

Attributes Value
Model / Reference

Hamilton Masterpiece Thin-O-Matic

Movement

Caliber 663 micro-rotor

Approximate Age

1960s

Case Size

33mm

Case Material

10K yellow gold filled

Strap / Bracelet

Original brown leather strap

Movement is running slightly fast at +/- 2 minutes per day. Dial is in pristine condition. Moderate scratches are present on acrylic crystal. Case is in good condition with minor surface scratches, original edges are intact

Hamilton was founded in 1892 in Lancaster, Pennsylvania, building its reputation on highly-precise timekeeping through railroad-grade pocket watches that helped keep America’s rapidly expanding rail system running safely. That reputation soon carried into military use: during World War I and II, Hamilton supplied precision wristwatches, chronometers, and timing instruments to U.S. forces, even halting civilian production during WWII to meet military demand. These wartime watches, often known as “campaign watches” or “trench watches” helped accelerate the shift from pocket watches to wristwatches and cemented Hamilton as a name associated with reliability under pressure.

In the postwar decades, Hamilton pushed into innovation and design, introducing the Ventura in 1957—the world’s first electric watch, later made famous by Elvis Presley—and contributing to early automatic chronograph and micro-rotor movements through its partnership with Buren. After moving production to Switzerland and joining what is now the Swatch Group during the quartz era, Hamilton evolved into a Swiss-made brand with strong American roots. Today, collections like the Khaki Field, Jazzmaster, and cinematic icons such as the Murph reflect Hamilton’s focus on functional design, practical precision, and accessible mechanical watchmaking.

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