Thinline 2015
1965–1966 · 14k Solid Yellow Gold · Manual Wind
About the Thinline 2015
The Thinline 2015 appeared in a single catalog year, 1965, making it one of the briefer entries in Hamilton's Thinline family. Housed in a 14K yellow gold rectangular case, it runs on the caliber 680, a 17-jewel manual wind movement that Hamilton engineered to keep the overall profile remarkably slim. The Thinline family was Hamilton's answer to the mid-1960s appetite for dress watches that could disappear under a shirt cuff, and the 2015 fits that brief precisely.
Finding a 2015 in good shape means paying close attention to the dial, which carries applied gold stick markers on a white field. Those markers can come loose or shift over sixty years, and the white dial itself is prone to aging unevenly depending on how the watch was stored. The 14K gold case holds up well if it hasn't been over-polished, so look for a case that still shows its original line definition.
From the Catalog
Hamilton marketed the 2015 in 1965 under the Thinline umbrella, emphasizing the ultra-thin case design alongside practical specs like shock resistance, anti-magnetic protection, and an unbreakable mainspring. It retailed for $175, which positioned it firmly in Hamilton's dress watch tier.
Hamilton Catalog Images
1965
What to Look For
| Dial | Look closely at the applied gold stick markers. After sixty-plus years, it's not unusual to find one that has shifted position or shows a gap where the adhesive has failed. The white dial surface should be consistent in color across the full field. Uneven yellowing or spotting suggests moisture got in at some point. |
| Crystal | The crystal on a watch this age is almost certainly a replacement or at minimum heavily scratched. Confirm it fits flush and seats properly in the bezel without any gap. |
| Movement | Ask when the caliber 680 was last serviced. Oil in a movement this age dries out completely, and dried lubricants create enough friction to stop the watch or cause it to run erratically even when it appears to be running fine. A movement that winds and ticks is not necessarily a movement that's ready to wear. |
| Case | The 14K yellow gold case should show its original angles and lines. Examine the lugs for thinning from repeated polishing. Heavy buffing rounds off the edges and removes detail that can't be restored. |
| Crown | Work the crown through its positions and make sure it winds smoothly and sets the time without slipping. A worn crown or damaged threads can be a nuisance to address on a case this small. |
The Movement
The caliber 680 is a 17-jewel manual wind movement that Hamilton built specifically with slim-profile dress watches in mind. It winds from the crown and powers the watch through a manual winding routine rather than the rotor-based system of an automatic. At this age, the movement rewards a proper service with fresh oil and a thorough clean before regular use.