Sidney
1937–1940 · 10k Yellow Gold Filled · Manual Wind
About the Sidney
The Sidney was produced from 1937 through 1940, carrying Hamilton's classic tonneau shape through the late prewar years. It runs on either the caliber 987E or 987A, both 17-jewel manual wind movements, housed in a 10K yellow Gold Filled case measuring 27.7mm in length. The applied gold numeral dial was the standard configuration, with numerals at all positions except 6, where a subseconds register takes their place. A black enamel numeral dial was also offered at a slight discount, and a two-tone white and butler finished pattern dial has been documented in the wild as well.
Dial condition is the first thing worth scrutinizing on a Sidney. The two-tone and silver dials can show moisture damage or crazing that photographs poorly but looks worse in hand, while the black enamel dials are prone to chips and losses that are difficult to restore convincingly.
From the Catalog
Hamilton described the Sidney in 1937 as a 17-jewel, 10K gold filled watch available in natural yellow only, priced at $40 with the applied gold numeral dial or $37.50 with the black enamel numeral dial. An earlier 1935 catalog listing referenced a 14K filled gold case and a price of $45, suggesting the model was updated in specifications and pricing by the time it reached its documented production run.
Hamilton Catalog Images
1937
1938
1939
1940
What to Look For
| Dial | Check that all applied gold numerals are present and secure, with none separating from the dial or missing. On two-tone dials, look for crazing, spotting, or moisture damage between the color zones. Black enamel dials chip at the edges, so inspect carefully around the perimeter and near the numeral feet. |
| Crystal | The 10K gold filled case on the Sidney is prone to wear-through at the top and bottom edges where the crystal sits. Before looking at the crystal itself, check those edges of the case for brass showing through. A replacement crystal is straightforward; a worn-through case is not. |
| Movement | At this age, lubricants in the 987E or 987A have almost certainly dried out. Dried oil creates enough friction to stop the watch or cause erratic timekeeping, so a full service is the realistic expectation on any unserviced example. Ask for documentation if the seller claims recent service. |
| Case | Beyond the crystal edges, examine the corners near where the lug tubes join the case body. Those joints are a known wear point on gold filled cases of this construction, and brass showing through there is common on worn examples. Light wear elsewhere is expected; heavy wear at the tubes is harder to live with. |
| Crown | Check that the crown is original or at minimum the correct size and thread, and that it winds and sets smoothly without slipping. A sticky or gritty feel when winding points back to the dry movement. Case backs on watches of this era can be tight, so factor in that a watchmaker may need proper tools to open it without damaging the case. |
The Movement
The caliber 987E and 987A are closely related 17-jewel manual wind movements that Hamilton used through the late 1930s and into the 1940s. Both are well-regarded for reliability and are serviceable with parts still available, though the 987A represented a refinement over the earlier 987E. They wind from the crown, keep a subseconds display at 6 o'clock, and reward proper service with solid long-term performance.