Sea Haven
1964 · 10k Rolled Gold Plate / Stainless Steel · Manual Wind
About the Sea Haven
Made only in 1964, the Sea Haven pairs Hamilton's caliber 686 manual wind movement with a 10K yellow RGP and stainless steel case. The dial runs silver with painted black numerals at 6 and 12, textured gold markers at the remaining hour positions, and a sweep seconds hand. Hamilton marketed it under the Durapower designation, meaning the case was rated waterproof and dustproof with its seals intact.
Finding a Sea Haven in honest, unpolished condition takes some patience. The textured gold markers on the dial are the first thing to scrutinize, as they can wear unevenly or lose their texture in a clumsy refinish attempt. The painted black numerals are similarly fragile, and a dial that has been touched up rarely looks right under close examination.
From the Catalog
Hamilton listed the Sea Haven at $69.50 in 1964, describing it as shock-resistant, anti-magnetic, and fitted with an unbreakable mainspring. The Durapower designation indicated waterproof and dustproof protection with seals intact, which was a meaningful selling point for a sport-adjacent watch at that price.
Hamilton Catalog Images
1964
What to Look For
| Dial | Look hard at the textured gold markers and painted black numerals. Textured surfaces on dials are notoriously difficult to replicate, so any refinishing work tends to be obvious. Uneven texture, inconsistent marker heights, or numerals that look too crisp or freshly painted are all signs the dial has been touched. |
| Crystal | Check for deep scratches or chips around the edges. A replacement crystal is inexpensive, but confirm it seats properly and that the original bezel detail is undamaged. |
| Movement | Oil dries and congeals in any movement of this age, and enough friction from hardened lubricants will cause the caliber 686 to run erratically or stop entirely. Ask when it was last serviced. A watch that winds smoothly and runs consistently has almost certainly been through a recent service. |
| Case | The 10K yellow RGP layer on these cases can wear through at the lugs and high contact points. Examine the lug tips and case edges closely. Light wear is expected and honest; heavy wear through to the steel underneath affects value. The case back can be stubborn to open, so if a seller cannot demonstrate the movement, factor that into your assessment. |
| Crown | The Durapower water resistance rating depended entirely on intact seals, and those seals are almost certainly degraded after sixty years. Confirm the crown screws down or seats properly, and treat this watch as water-sensitive regardless of its original rating. |
The Movement
The caliber 686 is a 17-jewel manual wind movement built to Hamilton's reliable mid-1960s standard. It is wound and set by the crown, with no automatic winding mechanism to complicate service. The 686 is a capable, straightforward movement, though its train bridge reassembly requires careful alignment of all four wheels simultaneously, which makes a proper service a more involved job than it might appear from the outside.