Automatic K-411
1958–1959 · 10k Yellow Gold Filled · Automatic
About the Automatic K-411
Made from 1958 through 1959, the Automatic K-411 is a circular, Gold Filled dress automatic from Hamilton's Automatic family, running on the caliber 661 with a sweep seconds hand. The dial is the real story here: a two-tone configuration with a textured gold center, a silver-white chapter ring carrying yellow incised Roman numeral markers, luminous dots at the hours, and a pearlized minute track. It's a lot of considered detail packed into a clean round case.
Finding a K-411 in genuinely good shape takes some patience. The two-tone dial construction, with its textured center field and white chapter ring, tends to show its age around the luminous dots first, where the lume can shrink, discolor, or pull away from the dial over time. The pearlized minute track is delicate and prone to fading. A crisp example with the dial intact is the one worth pursuing.
From the Catalog
Hamilton marketed the K-411 in 1958 as a waterproof automatic with yellow incised markers on a white rim, luminous dots, and a pearled track, listing it at $100 on bracelet or $95 on strap. That asterisk on "waterproof" was Hamilton's standard disclaimer of the era, and it's worth remembering that vintage water resistance ratings should never be trusted on a watch this old.
Hamilton Catalog Images
1958
1959
What to Look For
| Dial | Look closely at the chapter ring where it meets the textured center. Separation, detachment, or shadowing between the two zones can signal moisture exposure or age. Check each luminous dot individually. Shrunken or missing lume at the hour positions is common. The pearlized minute track fades easily, so look at it under direct light. |
| Crystal | The K-411 uses a domed crystal typical of this era. Check for crazing, chips at the edges, or deep scratches that catch light. A fogged or yellowed crystal often means moisture got in at some point, which makes the dial inspection even more important. |
| Movement | Oil dries and thickens over decades of sitting, and on a caliber 661 automatic, that friction can build up to the point where the watch stops or winds erratically. Ask about service history. If the answer is vague or unknown, factor a service into the cost. |
| Case | The 10K yellow gold-filled case should show even color with no brass bleeding through the high-wear points, especially on the lugs and caseback edges. Swept lugs like these can thin from polishing over the years. Check that the case shape still looks crisp rather than rounded off. |
| Crown | Pull the crown gently and check that it moves through its positions cleanly. A crown that spins without engaging or feels loose in the stem can mean a worn or broken stem, which is a common repair on automatics of this age. Also confirm the original crown is present, not a replacement of the wrong profile. |
The Movement
The caliber 661 is a 17-jewel Hamilton automatic, meaning it winds itself through the motion of wear via a rotating oscillating weight. No manual winding required under normal use, though the movement can also be wound by hand through the crown. It's a solid workhorse of Hamilton's domestic automatic production from this period, well-suited to daily wear when properly serviced.