Thinline 2038
1968–1970 · 14k Solid Yellow Gold · Manual Wind
About the Thinline 2038
Made from 1968 through 1970, the Thinline 2038 is a clean, dressy manual wind in 14K yellow gold, powered by Hamilton's caliber 688. It belongs to the Thinline family, a line built around slim, elegant cases meant to wear well under a shirt cuff. The 2038 keeps things understated: a silver dial with applied gold stick markers, no Arabic numerals, and a subseconds register at 6 o'clock.
Applied gold stick markers are a detail worth inspecting carefully on any example, since they can loosen or pull away from the dial over decades, especially if the watch has seen moisture. The all-gold case and clean dial make this a genuinely wearable dress watch, and the three-year production window means examples turn up often enough to be findable without being so common that condition stops mattering.
From the Catalog
Hamilton listed the Thinline 2038 in its 1968 catalog simply as a 14K yellow gold model at $120, letting the case material and clean design speak without much elaboration.
Hamilton Catalog Images
1968
What to Look For
| Dial | Look closely at the applied gold stick markers under good light. Check for any that are detaching, shifted, or missing entirely. The silver dial surface should be clean and consistent, without spotting or moisture damage near the edges. |
| Crystal | Check for deep scratches or crazing. A worn crystal is replaceable, but confirm it fits flush to the case without gaps that could let in dust or moisture. |
| Movement | Ask about service history for the caliber 688. Dried oil in a movement this age creates enough friction to stop the watch or cause erratic timekeeping, even if it appears to be running fine. |
| Case | This is a 14K yellow gold case, so check the high-wear points, lugs especially, for dents or deep scratches. Case backs on watches like this can be stubborn to open, so make sure yours shows evidence of proper opening rather than tool slip marks around the edge. |
| Crown | The crown on a caliber 688 can detach from the stem if pulled too hard during hand-setting. Test that the crown seats and engages smoothly. Replacement crowns exist, but an original matching crown is always preferable on a gold-cased watch. |
The Movement
The caliber 688 is a manual wind movement Hamilton used across several dress models in the late 1960s. It winds and sets reliably, and its slim profile suits the Thinline case well. At this age, a proper cleaning and fresh lubrication are essential before expecting the movement to run accurately.