Accumatic II
1956–1958 · 10k Rolled Gold Plate / Stainless Steel · Automatic
About the Accumatic II
Made from 1956 through 1958, the Accumatic II was one of Hamilton's early entries in the Accumatic line, the brand's first self-winding series for the American market. It runs on the caliber 672, a 17-jewel automatic with sweep seconds, housed in a 10K yellow rolled gold case with a stainless steel back. The dial is white with embossed gold numerals and markers, luminous dots, and a pearled track, giving it a dressy but legible look that suited mid-century American tastes. Some examples were also offered with a wind indicator complication, making those variants worth watching for.
Embossed dials like this one are more durable than printed dials in some respects, but the gold-colored finish on the numerals and markers can show wear at the high points after decades of use, so condition varies. The pearled chapter ring detail is a nice period touch that's easy to overlook in photos but looks sharp in person. Finding one with the optional wind indicator intact and functional is a genuine bonus, and either configuration on a solid bracelet makes for a compelling mid-1950s automatic.
From the Catalog
Hamilton marketed the Accumatic II in 1956 as a waterproof automatic with a 10K yellow rolled gold case and stainless steel back, noting the embossed yellow numerals, luminous dots, and pearled track. It retailed at $75.00 on bracelet or $69.50 on strap, positioning it as a solid mid-range automatic for the American buyer.
Hamilton Catalog Images
1956
1957
1958
What to Look For
| Dial | Look closely at the embossed numerals and markers under good light. The raised surfaces are where the gold-colored finish wears first, so check for rubbing or loss at the peaks of each numeral. The luminous dots can also discolor with age. A clean, evenly aged dial with no touchups is what you want. |
| Crystal | These came with acrylic crystals. Check for deep scratches, crazing, or a yellowed tint. A fresh crystal is an inexpensive fix, but make sure any replacement is properly fitted to preserve the waterproof rating claim. |
| Movement | The 672 is a solid automatic, but if the watch has sat unserviced for years, dried lubricants can create enough friction to stop it entirely. Ask when it was last serviced. A watch that runs but runs rough or loses time significantly probably needs a full service before it can be trusted. |
| Case | The RGP layer on the case wears over time, especially on the lugs and any high-contact surfaces. Check the lug tips and bezel edges for brass showing through. The stainless back should be in good shape since it holds up better, but look for deep marks from improper case opening attempts. |
| Crown | Despite its original waterproof rating, treat this watch as not water-resistant. The gaskets on 60-plus-year-old cases are not reliable without fresh seals after a proper service. The crown should feel firm and seat fully against the case when pushed in. |
The Movement
The caliber 672 is a 17-jewel Swiss-made automatic that Hamilton developed for the Accumatic line. It winds via a rotor as the watch moves on the wrist, and like many automatics of the era, it also accepts manual winding through the crown, though the crown engages the rotor when you do so. It is a dependable and serviceable movement that holds up well when properly maintained.