Dateline A-596
1972–1973 · Stainless
About the Dateline A-596
Made from 1972 through 1973, the Dateline A-596 is part of Hamilton's Dateline family, a series unified by a shared date complication across all its models. The movement inside is the caliber 64A, a Hamilton-badged version of the ETA 2452, running in a round stainless steel case with a 12mm profile. The orange dial is a striking departure from the more conservative options Hamilton offered elsewhere in the line, and it gives the A-596 a distinctly early-1970s personality.
Orange dials from this era can fade unevenly or develop a patchy quality over fifty years, so condition varies more than you might expect. The applied indices are worth a close look under good light, since loose or detaching markers are a common sign of prior moisture exposure or a rough service history. Finding one with an honest, unmolested dial is the real challenge.
From the Catalog
Hamilton offered the A-596 in 1972 with an orange dial, available on a strap for $110.00 or on a bracelet for $119.95, marketed simply as a stainless steel Q/C II model.
Hamilton Catalog Images
1972
1973
What to Look For
| Dial | Orange dials from this period can fade or mottle with age. Look for even color across the surface and check that the applied indices are sitting flush, not separating at the edges or showing adhesive residue around the base. |
| Crystal | Check for chips, deep scratches, or a crystal that sits proud of the bezel, which can indicate a replacement that isn't quite right for the case. |
| Movement | Ask about service history. The 64A is an automatic with a date complication, and the quick-set mechanism relies on small parts that wear or gum up when lubricants break down. A watch that winds and runs briefly but stops after a few hours is a classic sign of a movement that needs a full service. |
| Case | The hidden lug design on this case can make damage harder to spot at a glance. Run a fingernail along the lug undersides and around the case edge to feel for dents or deep gouges that photos tend to hide. |
| Crown | The stem on the 64A is a two-piece design built to separate intentionally, which means the crown can pull free if handled roughly. Confirm the crown seats properly in each position and doesn't feel loose or wobble when you set the time and date. |
The Movement
The caliber 64A is Hamilton's version of the ETA 2452, an automatic movement with a date complication. It winds through a conventional rotor and advances the date at midnight through a quick-set mechanism. Lubricants dry out over decades, and a movement this age that hasn't been recently serviced may stop unexpectedly or run erratically even if it seems to be working at first glance.