Accumatic A-517
1972 · Stainless
About the Accumatic A-517
Made only in 1972, the Accumatic A-517 arrived near the very end of Hamilton's Accumatic run, which had started back in 1956. This is a round stainless steel case at 39mm wide and 11mm thick, driven by Hamilton's caliber 689 automatic. The A-517 was water resistant as issued, and it carries the hidden lug style that gives the case a cleaner, more integrated look than earlier Accumatic designs.
Gray dial examples have a way of looking better in person than in photos, and the applied indices give the dial some depth that printed markers can't replicate. Because this model sits at the tail end of the Accumatic family, survivors that haven't been over-polished or had their dials messed with are worth paying attention to. The screw-down case back kept moisture out for decades, but that same feature means case backs can be stubborn, and a previous owner's attempts to open one without the right tools can leave marks worth checking for.
From the Catalog
Hamilton listed the A-517 simply as a stainless steel watch with a gray dial, priced at $105.00 in 1972, which placed it in the mid-range of the Accumatic lineup at the time.
Hamilton Catalog Images
1972
1973
What to Look For
| Dial | Look for the gray dial under good light and check for spotting, moisture damage, or separation at the indices. The dial surface on watches like this cannot be cleaned without damaging the printing, so what you see is what you get. Any previous attempts at 'cleaning' the dial are usually obvious and impossible to reverse. |
| Crystal | The A-517 takes an acrylic crystal, which scratches easily but can usually be polished back to clarity. Deep gouges are harder to address, so check the crystal edge-on in raking light before assuming it just needs a buff. |
| Movement | Ask when the caliber 689 was last serviced. A watch that has been sitting for years may appear to run fine initially but stop within a day as dried oil creates resistance the mainspring can't overcome. If service history is unknown, budget for a full service. |
| Case | The hidden lug design looks great when original, but it also makes it harder to assess whether the case has been polished down. Check that the case edges and transitions still have some crispness to them. Flat, rounded edges usually mean a wheel or two with a polishing cloth. Also inspect the case back for tool marks from improper opening attempts. |
| Crown | Check that the crown is signed and original. A replaced crown is a minor issue, but a missing or incorrect crown affects both function and presentation. Make sure it screws down smoothly if the case has a screw-down crown, and that there's no stripping on the threads. |
The Movement
The caliber 689 is a self-winding movement, meaning the rotor winds the mainspring automatically through normal wrist motion. It's a solid workhorse of a movement, and Hamilton used it across a range of Accumatic models in this era. Like any automatic that's been sitting, dried lubricants can create enough friction to stop the watch even when the mainspring appears to have power, so a service history matters here.