Dateline S-675
1966–1969 · 10k Rolled Gold Plate · Manual Wind
About the Dateline S-675
Made from 1966 through 1969, the Dateline S-675 is part of Hamilton's Dateline family, which brought date functionality to a broad range of dress and casual styles during the mid-to-late 1960s. This model runs on the caliber 674, a 17-jewel manual wind movement, housed in a round 10K yellow Gold Filled case. The dial is silver with applied gold markers and a date window at 3 o'clock, with a sweep seconds hand completing the layout. It's a clean, understated dress watch that delivered genuine practicality at an accessible price point.
Finding one in solid condition means checking the dial carefully around the date window, where moisture intrusion tends to leave its mark first on silver dials from this era. The applied gold markers hold up well over time, but look for any that may have shifted or separated at the edges. The 10K Gold Filled case wears through at the lugs and case back rim with regular use, so take a close look at those areas before committing.
From the Catalog
Hamilton described the S-675 as a calendar model with a weatherproof case, priced at $69.50 in 1968, making it an accessible entry into Hamilton's date-equipped lineup without stepping into the higher-tier automatic models.
Hamilton Catalog Images
1966
1968
What to Look For
| Dial | Look closely around the date window cutout for discoloration, peeling, or moisture staining on the silver dial. Check each applied gold marker to make sure none have shifted or started to separate at the base. The dial finish should be even and consistent across the surface. |
| Crystal | These take a flat acrylic crystal. Scratches are common and expected, but deep gouges that catch your fingernail will affect readability. A replacement crystal is straightforward, but confirm the correct diameter before sourcing one. |
| Movement | The caliber 674 includes a date mechanism with small springs and components that are easy to lose during service. Ask whether the watch has been recently serviced, and if not, budget for it. Wind it fully and watch whether it runs consistently or stops under light movement, which points to dried lubricants. |
| Case | Gold-filled cases show wear at the lug tips and around the case back rim first. Check those areas in good light. Some wear is normal given the age, but look for spots where the base metal is fully exposed, which affects both appearance and long-term durability. |
| Crown | The crown should turn smoothly in the winding position and snap cleanly into the date-set position without slipping. A crown that feels loose or gritty, or one that looks replaced, is worth flagging. Also note that even though the original spec included weatherproof rating, no vintage watch of this age should be treated as water resistant. |
The Movement
The caliber 674 is a 17-jewel manual wind movement that Hamilton used through the mid-to-late 1960s in a range of date models. It's a reliable, straightforward movement with a date mechanism integrated into the works. Wind it fully before evaluating how it runs, and give it time to settle into a rate, since dried lubricants on a movement this age can create enough friction to affect timekeeping noticeably.