Automatic K-458
1958–1960 · 10k Yellow Gold Filled / Stainless Steel · Automatic
About the Automatic K-458
Made from 1958 through 1960, the Automatic K-458 is part of Hamilton's broader Automatic family, a line of self-winding models that helped Hamilton compete in the growing postwar market for everyday dress watches. It runs on the caliber 661, a 17-jewel automatic movement, housed in a round 10K yellow Gold Filled case with a stainless steel back. The dial is white with embossed gold numerals and markers, luminous dots, and a pearled track around the chapter ring, giving it a clean but detailed look that reads well on the wrist.
The pearled track is worth examining closely on any example you find, as fine surface details like that are among the first things to show wear or previous amateur cleaning. Embossed gold elements on the dial are more durable than printed ones, but they can still pull away from the dial or lose their finish if a watch has been exposed to moisture over the years.
From the Catalog
Hamilton listed the K-458 at $100.00 on a strap in 1958, with a bracelet option bringing the price to $110.00 by 1960. The original marketing emphasized the 10K yellow gold-filled case, the embossed numerals and luminous markers with pearled track, and a weatherproof rating, which was a meaningful selling point for an everyday automatic at that price point.
Hamilton Catalog Images
1958
1960
What to Look For
| Dial | Look at the pearled track under a loupe. Individual pearls should be distinct and even, not flattened or smeared from cleaning. Check the embossed numerals for separated edges or loss of the gold finish. Luminous material on this vintage dial will have aged, but it should be consistent and not flaking. |
| Crystal | These use a mineral crystal. Light scratching is normal and polishable, but deep gouges near the edge can hint at someone attempting to open the case from the wrong side, which is worth flagging. |
| Movement | On a caliber 661 that has been sitting unserviced for years, oil dries and thickens enough to stop the movement entirely. Confirm the watch is actually running and winding reliably before buying. A watchmaker can assess whether it needs service. |
| Case | Inspect the case back edge for pry marks or deformation. The case back on models like this can be tricky to open, and untrained attempts sometimes leave visible damage. Check the gold-filled surfaces on the case and lugs for wear-through to the base metal, particularly at high-contact points. |
| Crown | The crown should pull out smoothly and set the time without slipping. A worn crown or damaged stem will affect daily use and is a repair cost to factor in. |
The Movement
The caliber 661 is a 17-jewel automatic movement made by Hamilton in the United States. It winds itself through a rotating oscillating weight as the watch moves on the wrist, so normal daily wear keeps it running without manual winding. It is a reliable movement when properly serviced, though like any automatic of this vintage it benefits from a full service if it has been sitting unused for an extended period.