Thinline 2029B
1968–1969 · 14k Solid Yellow Gold · Manual Wind
About the Thinline 2029B
Made from 1968 through 1969, the Thinline 2029B is a 14K yellow gold dress watch built around Hamilton's caliber 688 manual wind movement. The Thinline family was Hamilton's answer to the growing demand for slimmer, more elegant watches in the late 1960s, and the 2029B fits that brief with a clean circular case and applied gold markers on a white dial. The sweep seconds hand adds a bit of life to what is otherwise a very restrained, formal design. Hamilton offered it as a complete package, case and bracelet both in 14K yellow gold, at $335 in its catalog year.
Finding a 2029B with its original 14K bracelet intact is genuinely uncommon. Bracelets on gold dress watches from this era tend to get separated from the watch over the decades, sold off, sized down, or simply lost, so a complete example with matching bracelet is worth paying attention to. The white dial with applied gold stick markers is delicate, and any discoloration, detaching markers, or refinishing signs will affect the watch considerably in both presentation and value.
From the Catalog
Hamilton's 1968 catalog listed the Thinline 2029B with a 14K yellow gold case and bracelet at $335, a price point that placed it firmly in the premium tier of the Thinline lineup. The catalog entry was brief, letting the gold construction and the Thinline name carry the description.
Hamilton Catalog Images
1968
What to Look For
| Dial | Look closely at the applied gold stick markers. Markers showing separation or misalignment are a sign of age or past moisture exposure. The white dial should be clean and even. Any spotting, yellowing, or evidence of refinishing changes what you're looking at significantly. |
| Crystal | Confirm the crystal is free of deep scratches or crazing. A worn crystal on a 14K gold watch like this is worth replacing, but factor it in. |
| Movement | Wind the watch and confirm the caliber 688 is running. Dried oil is a genuine concern in any manual wind that has been sitting unworn, and enough friction can stop the movement entirely. A watch that runs but loses significant time likely needs a service. |
| Case | Examine the case and bracelet for heavy polishing. Sharp edges and original surface texture are signs the metal hasn't been over-buffed. On a 14K gold case, aggressive polishing rounds out detail and removes material that can't be replaced. Confirm the bracelet is present and matches the case. |
| Crown | Wind and set the watch with care. The crown can detach from the stem if pulled too hard, which is a straightforward repair but inconvenient. Confirm it winds smoothly and sets the hands without slipping. |
The Movement
The caliber 688 is a 17-jewel manual wind movement made during Hamilton's transitional period, when the company was sourcing Swiss-made ebauches for its slimmer dress watch lines. It is a reliable, thin movement well suited to the dress watch format. Properly serviced, it keeps good time and winds with a smooth, even feel.