Hamilton Aqua-Date Super Compressor
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Hamilton Aqua-Date Super Compressor

What does Hamilton have in common with Jaeger-LeCoultre, Longines, Blancpain, Universal Geneve, and Zenith? They all sold the same damned watch.

Super Compressor diving watches are a category unto themselves, and the best Swiss brands sold versions of the distinctive dual crown watches that have been one of the most popular types of dive watches for years.

The Super Compressor name refers to the innovative case design, which utilizes a "compressor" system that’s designed to become more watertight the deeper that the watch went under water. As the atmospheric pressure increases along with depth, the case back in compressed, pushing on the gaskets and creating a tighter seal.

The compressor case wasn’t any better at preventing water intrusion than a screw-down crown (in fact, it was probably worse), but due to their good looks, compressor cases proved to be popular during the 1960s. Eager to get into the burgeoning dive watch market, many of the best Swiss brands turned to EPSA (Ervin Piquerez, S.A.), the leading manufacturer of compressor cases at the time, for cases to build their divers around.

It is perhaps the internal bezel that has become the most endearing feature of Super Compressors to collectors today, and the idea behind them is that they’re less prone to accidental rotation that an external bezel. They worked out great for warm water divers, but anyone with gloved hands would have been out of luck (but at least stylish!).

This particular example is branded by Hamilton, and features a classic 36mm EPSA case with dual crowns and the characteristic internal rotating dive bezel. Sporty yet comfortably sized, this piece shows normal signs of use throughout, and a beautiful patination of the silver dial- a characteristic unique to the Hamilton variants.

For more information on the history of compressor-cased diving watches, click over to Scubawatch.org, HERE.

Details

Steel Compressor Case is approximately 36mm (excluding the crowns). Hamilton 64A movement. Circa 1967.

Overall condition: Case is in good condition over all, showing light signs of wear consistent with age and use. Dial, internal bezel, and hands are in good condition showing evenly aged luminescent elements and a speckled patina. Dual crosshatched crowns and Hamilton signed screw down case back.  

Includes black textured 18mm strap and an 18mm nylon strap by Crown & Buckle.

SKU: TT01038

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