Automatic K-418
1961 · 10k Yellow Gold Filled · Automatic
About the Automatic K-418
Made only in 1961, the Automatic K-418 is a single-year model from Hamilton's Automatic family, powered by the caliber 667, a 17-jewel self-winding movement. The case is 10K yellow Gold Filled in a round shape, and the dial is one of the more visually distinctive Hamilton produced in this period: a silver field covered in raised concentric rings, a golden ring around the outer perimeter, and luminous dots outside the hour markers with luminous hands. The Automatic family was Hamilton's bread-and-butter line of self-winding dress watches in the late 1950s and early 1960s, and the K-418 fits that tradition while pushing further on texture and surface detail than most of its siblings.
The embossed dial is what makes this model worth seeking out, and it is also the first thing to evaluate carefully. The raised ring pattern is delicate and does not respond well to amateur refinishing or moisture intrusion; original examples in clean condition are genuinely harder to find than most single-year Hamilton automatics from this era. Luminous material on the hands and dial dots should be inspected under magnification for cracking or flaking, which is common at this age and does not necessarily disqualify a watch but should factor into any assessment of originality.
From the Catalog
Hamilton described the K-418 in terms of its distinctive textured dial and dressy yellow gold-filled case, positioning it as a refined automatic for everyday wear. Original retail pricing placed it in the mid-range of Hamilton's automatic lineup for 1961.
Hamilton Catalog Images
1961
What to Look For
| Dial | The embossed raised-ring texture is the soul of this watch. Look closely for any flatness, discoloration, or signs that the dial was cleaned or refinished. The golden perimeter ring should be sharp and even. Any loss of definition in the raised rings usually points to moisture damage or an overzealous cleaning attempt. |
| Crystal | Check for deep scratches, chips at the edge, or poor fit. A replacement crystal that sits too high or too low will affect the overall appearance noticeably on a watch this refined. Acrylic crystals can be polished, but clarity and fit matter here. |
| Movement | The caliber 667 is an automatic and should wind from normal wrist motion. Dried-out lubricants generate enough friction to stop the movement, so confirm it is running consistently and not stopping unexpectedly. A watch that runs fine on the wrist but stops overnight is a common sign that a service is overdue. |
| Case | The 10K yellow gold-filled case should show even color across the lugs and case body. Heavy wear through to the base metal is most common on the lugs and caseback edges. Swept lugs on this style can thin out with repeated polishing, so look for any softening of the lug profile. |
| Crown | The caliber 667 can be tricky to hand-wind since access to the crown is limited on one side. Test the crown for smooth winding action and secure time-setting with no slipping. A worn or replaced crown is common and usually a minor issue, but confirm it seats properly. |
The Movement
The caliber 667 is a 17-jewel automatic made by Hamilton in the USA. It winds from the motion of the wrist through a rotor mechanism, so it does not need daily manual winding under normal wearing conditions. The movement has a known quirk during service: the train bridge requires three wheels to be aligned simultaneously during reassembly, which makes it a fussier caliber than average and one that rewards a watchmaker who has spent time with it specifically.