Tonneau Engraved
1928–1932 · Gold Filled
About the Tonneau Engraved
Made from 1928 through 1932, the Tonneau Engraved comes from Hamilton's geometric era, when wristwatch models were named for their case shapes rather than given proper names. It belongs to a family of tonneau-cased watches Hamilton offered in multiple configurations during this period, with the Engraved distinguished by its decorated case work. The caliber 987, a 17-jewel movement, runs inside a 14K Gold Filled case measuring 27.1mm wide and 30.6mm long, available in yellow, green, or white gold finishes. Solid 14K gold versions were also offered at a premium.
Finding one in good shape takes patience. The case corners near the crystal bezel are particularly vulnerable to wear on these watches, so inspect that area carefully before buying. Dials from this period carried applied gilt Arabic numerals at 12, 3, and 9 with a subseconds dial at 6 o'clock, and original examples with intact numerals and clean silver-tone dials are worth holding out for.
From the Catalog
Hamilton offered the Tonneau Engraved in 14K gold filled versions starting at $57.00, with 14K solid gold versions available for $72.00, and an optional raised gold figure dial available for an additional $9.00. These were not inexpensive watches for their time, which reflects both the quality of the movement and the care that went into the case finishing.
Hamilton Catalog Images
1929
1930
1931
1932
What to Look For
| Dial | Look for separation or loss on the applied gilt numerals at 12, 3, and 9. The silver-tone surface can develop spotting or oxidation, especially near the subseconds register at 6 o'clock. A dial with intact, well-adhered numerals and no significant spotting is worth paying attention to. |
| Crystal | Check for chips or deep scratches. More importantly, examine the case bezel at the corners of the crystal opening, as this is exactly where the gold fill tends to wear through first on these rectangular cases. |
| Movement | The caliber 987 is a capable movement, but the hairspring and balance pivots are delicate and prone to damage if a previous owner or unqualified hand attempted any adjustment. Dried-up lubricants in a movement this age can create enough friction to stop it even when the mainspring still has power. If it runs, confirm it actually keeps time, not just ticks. |
| Case | Gold filled cases from this era can wear through at high-contact points. Check the back, the lugs, and especially the bezel corners for any copper-colored bleed-through. The case backs on these can be tricky to open, so avoid buying from listings where the back has clearly been pried at carelessly. |
| Crown | Confirm the crown is original or at minimum a correct period replacement. A stripped or oversized crown often signals someone worked on the movement without the right tools. It should wind smoothly without slipping or grinding. |
The Movement
The caliber 987 is a 17-jewel manual-wind movement produced by Hamilton in Lancaster, Pennsylvania. It is a solid, well-regarded movement from Hamilton's classic American-made era, built to tight tolerances and capable of good accuracy when properly serviced. At nearly a century old, any example found today should be assumed to need a full service before it can be trusted to run reliably.