Dateline A-590
1971–1972 · Stainless
About the Dateline A-590
The Dateline A-590 was Made from 1971 through 1972, part of Hamilton's Dateline family of automatic date watches produced through the early 1970s. It runs on the caliber 694A and wears a round stainless steel case with swept lugs, giving it a clean, sport-adjacent profile that fits comfortably with the design sensibility of that era. The Dateline line was Hamilton's answer to the growing demand for practical, date-displaying automatics at an accessible price point, and the A-590 represents that in a tidy stainless package.
Finding one in honest condition means paying close attention to the dial, which carries applied indices that can come loose or show moisture damage after five decades. The stainless case holds up well if it hasn't been over-polished, and the swept lugs in particular lose their character quickly under a buffing wheel, so original skin on the case is something worth looking for specifically.
From the Catalog
Hamilton positioned the Dateline series as a modern, capable automatic for everyday wear, and the A-590's stainless steel construction reinforced its practical, durable character. Original pricing put it within reach for buyers who wanted an automatic date watch without stepping into the upper end of the Hamilton lineup.
Hamilton Catalog Images
1971
What to Look For
| Dial | Look closely at the applied indices. After fifty-plus years, the adhesive or feet that secure them can fail, leaving markers separated or misaligned. Also check for moisture ghosting around the date window, which shows up as a faint haze or discoloration on the dial surface. |
| Crystal | Check for deep scratches or chips. If the crystal has a diamond-faceted profile, know that replacement is genuinely difficult, so condition matters more than it would on a flat or domed acrylic. |
| Movement | The caliber 694A is an automatic with a date complication, and lubricants dry out over decades in ways that create enough friction to stop the movement or cause erratic timekeeping. Ask about service history, and watch the date change overnight if you can, since the date mechanism relies on small spring-loaded parts that are easy to lose during service and easy to damage when dry. |
| Case | The swept lugs are a defining feature of this case, and they show polishing abuse clearly. Look for sharp lug edges and original brushed or satin surfaces rather than a mirror finish across the whole case. |
| Crown | Cycle through all crown positions and confirm the date sets smoothly and the time sets without slipping. A worn crown or damaged stem will make the watch frustrating to use daily. |
The Movement
The caliber 694A is a Swiss-made automatic movement with a date complication, built during the period when Hamilton had shifted its production base to its Swiss operations. It winds via a rotor as the watch moves on the wrist, so it keeps itself wound under normal daily wear. The date function advances at midnight through a quick-set or indirect mechanism, and like most movements of this generation, it rewards a fresh service with noticeably better accuracy and reliability.