M 89-3
1963–1966 · Stainless · Automatic
About the M 89-3
Made only in 1964, the M 89-3 is part of Hamilton's M Series, a line of automatic stainless steel watches built around accessible price points without cutting corners on the movement. This one runs on the caliber 689A, a 17-jewel automatic, and came paired with a stainless steel bracelet as original equipment. The round case measures 11mm thick with an 18mm lug width, a proportionate and wearable size by any era's standard. The silver dial with applied baton markers gives it a clean, purposeful look that suited the mid-1960s American market well.
Finding an M 89-3 with its original bracelet intact is genuinely uncommon. Bracelets from this period were often swapped out or lost, so a complete matching set adds real interest to an already appealing piece. The silver dial can show age in subtle ways, and the applied baton markers are worth examining closely for any separation or corrosion at the feet.
From the Catalog
Hamilton listed this model as self-winding with a stainless steel case and bracelet, waterproof and shock resistant, at $89.50 in 1964. That price point placed it solidly in the working professional range, offering automatic convenience in a complete, ready-to-wear package.
Hamilton Catalog Images
1964
What to Look For
| Dial | Look for even aging across the silver surface. The applied baton markers can pull away slightly at the base over time, so check each one carefully under light. Any pitting or spotting near the markers often signals moisture intrusion at some point in the watch's life. |
| Crystal | This is a round case from 1964, so expect a mineral or acrylic crystal depending on what replacement was fitted over the years. Check for deep scratches or crazing. A good acrylic can be polished; a chipped or cracked crystal needs replacement before the dial takes damage. |
| Movement | Oil hardens in movements of this age, and dried lubricant can create enough friction to stop an automatic cold. If the watch is running slow, stopping intermittently, or not winding itself efficiently, assume it needs a full service before drawing any conclusions about the movement's condition. |
| Case | Stainless steel holds up well, but check the lugs for thinning from polishing. The swept lug style on this case can lose its shape quickly if someone went heavy with a polishing wheel. Some honest wear is expected and acceptable; aggressive polishing is a different story. |
| Crown | The original water resistance rating no longer applies to any vintage watch. Check that the crown screws or seats fully without wobble, and look at the stem area under magnification for any hairline corrosion that would suggest moisture got in. |
The Movement
The caliber 689A is a 17-jewel automatic movement from Hamilton's later American period. It winds via a rotor as the watch is worn, so it stays running without manual winding under normal daily wear. The 689A is a reliable and well-regarded caliber, though like any movement from this era it benefits from fresh oil and a proper cleaning to perform as it should.