Thinline 2009
1964 · 14k Solid Yellow Gold · Manual Wind
About the Thinline 2009
Made only in 1964, the Thinline 2009 is part of Hamilton's Thinline family, which explored slimmer case profiles during a period when the brand was pushing toward more refined dress watch designs. The case is 14K yellow gold in a cushion shape with Housing a manually wound caliber 687 with 17 jewels. The white round dial carries applied gold markers and a date window at 3 o'clock, with no printed numerals to interrupt the clean layout. At $160 in 1964, it was a serious purchase, positioned as a refined dress piece with genuine horological credentials.
Applied gold markers on a silver dial are a combination that reads beautifully in person but can be tricky to evaluate in photos, so close inspection matters. Finding a Thinline 2009 in honest, unworn condition is genuinely satisfying given how brief its production run was.
From the Catalog
Hamilton promoted the Thinline 2009 with a focus on its ultra-thin case design, along with shock resistance, anti-magnetic protection, and an unbreakable mainspring. It listed simply as a 14K yellow gold Thinline at $160 in the 1964 catalog, letting the specifications carry the pitch rather than elaborate description.
Hamilton Catalog Images
1964
What to Look For
| Dial | Look closely at the applied gold markers. They should sit flat and even, with no separation at the edges or oxidation underneath. The silver dial surface should be clean and free of spotting or moisture damage around the date aperture at 3 o'clock. |
| Crystal | Check for deep scratches or chips. At this age, the crystal has likely been replaced at least once. An appropriate flat mineral or acrylic crystal matters more here than a pristine original, but verify it sits flush and seals correctly. |
| Movement | Ask when the caliber 687 was last serviced. Dried oil in a movement this age creates enough friction to stop the watch entirely, even if it appears to run. A recently serviced example will wind smoothly and hold amplitude well through the power reserve. |
| Case | The 14K yellow gold cushion case should show consistent wear across surfaces. They are a defining element of this reference and any heavy polishing or dings there change the character of the watch significantly. |
| Crown | Work the crown through its positions. It should pull out with a clean click and set the hands and date without slipping. A worn crown on a 14K gold case can be expensive to replace with a correct match, so verify this before purchasing. |
The Movement
The caliber 687 is a 17-jewel manually wound movement produced during Hamilton's transitional period. It winds via the crown and requires periodic winding to keep running, which many collectors actually prefer for the direct connection it creates with the watch. The click spring in this caliber has a tendency to dislodge during servicing, so a competent service history matters when evaluating one of these.