Thinline 2019
1966–1969 · 14k Solid White Gold, 14k Solid Yellow Gold · Manual Wind
About the Thinline 2019
Made from 1966 through 1969, the Thinline 2019 is part of Hamilton's Thinline family, which prioritized slender case profiles during a period when slim dress watches were in high demand. The movement inside is Hamilton's caliber 680, a 17-jewel manual wind, fitted into a square 14K gold case available in both white and yellow gold. The round silver dial with applied gold hour markers and a subseconds dial at 6 gives it a classic dress watch layout, clean and balanced without being plain.
Applied gold markers on a silver dial can show wear at the edges where the feet attach to the surface, so it's worth looking closely at each marker with a loupe if possible. The case was offered in both white and yellow gold, and both versions carry the same $175 original retail price from 1966, which puts this solidly in Hamilton's upper-tier dress range for the period. Finding one with an undamaged dial and intact case seals is the real challenge at this point.
From the Catalog
Hamilton marketed the Thinline 2019 at $175 in 1966, positioning it alongside its ultra-thin case designs with a 17-jewel movement, shock resistance, anti-magnetic protection, and an unbreakable mainspring. The original listing also noted waterproof and dustproof capability with seals intact, a meaningful selling point for a fine gold dress watch at that price.
Hamilton Catalog Images
1966
1968
What to Look For
| Dial | Check each applied gold marker carefully. Over time, the feet that secure them to the dial surface can loosen or corrode, causing markers to pull away from the dial or shift. Also look for spotting or silvering loss on the dial surface, which is common on silver dials of this age. |
| Crystal | The square case with a circular dial means the crystal fitment matters more than usual. Look for chips or crazing at the edges, and confirm the crystal is seated properly with no gaps around the perimeter. |
| 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 keeping time. |
| Case | Both white and yellow gold versions are 14K, so check the hallmarks inside the case back to confirm metal content. Case backs on sealed dress watches like this can be tricky to open without the right tools, which is one reason some have gone decades without a proper service. |
| Crown | The crown on a manual wind movement takes more regular use than an automatic, so check that it winds smoothly, sets cleanly, and seats fully against the case. A sticky or wobbly crown often points to a worn stem or damaged gasket. |
The Movement
The caliber 680 is a 17-jewel manual wind movement made for Hamilton's slim dress watch lines of the 1960s. It winds by hand through the crown and is compact enough to fit the thin case profile the Thinline family was built around. Seventeen jewels is a solid count for a movement in this class, providing adequate bearing surfaces to reduce wear at the key friction points.