Cyril
1954–1957 · 10k Yellow Gold Filled / Stainless Steel · Manual Wind
About the Cyril
Made from 1954 through 1957, the Cyril is a 25mm square-cased dress watch built on either the caliber 747 or caliber 730, both 17-jewel manual wind movements. The case is 10K yellow Gold Filled with a stainless steel back, and the dial Hamilton specified was a sterling silver dial with 18K applied gold numerals at all positions except 6, where a subseconds register sits instead. The Cyril belongs to Hamilton's mid-1950s lineup of refined square dress watches, a format Hamilton returned to repeatedly during this era.
Silver dials are prone to their own particular aging, and the applied 18K gold numerals on the Cyril make the dial construction more vulnerable than it might appear at first glance. The bond between applied elements and a silver dial surface can be affected by moisture over decades, so condition varies considerably from example to example.
From the Catalog
Hamilton described the Cyril in its 1956 catalog as a 17-jewel watch in a 10K yellow gold-filled case with a stainless steel back, fitted with a sterling silver dial carrying 18K gold numerals. The bracelet version retailed for $72.50, while the strap version came in at $62.50.
Hamilton Catalog Images
1955
1956
1957
What to Look For
| Dial | The silver dial is the most fragile element of this watch. Look closely for separation or detachment around the applied 18K gold numerals, any moisture damage or spotting in the silver finish, and signs that the dial has ever been cleaned improperly. Original finish on silver dials does not tolerate cleaning attempts well, and refinished dials lose significant collector value. |
| Crystal | Confirm the crystal fits the square case correctly with no gaps or separation at the edges. A poor-fitting replacement crystal is a common shortcut and affects both the look and the moisture resistance of the case. |
| Movement | Ask about service history. In a caliber 747 or 730 that has gone years without service, dried oil creates enough friction to stress the gear train and affect timekeeping. Both are capable manual winds, but neither rewards neglect. Confirm the subseconds hand is present and undamaged. It is easily lost during service if removed carelessly. |
| Case | The 10K yellow gold-filled case should show even wear consistent with its age. The stainless steel case back is separate from the gold-filled case body, so confirm it is the correct back for this model. |
| Crown | The crown should screw or pull smoothly and engage the movement cleanly. A sticky or loose crown can indicate a worn stem or a replacement that is not correctly matched to the movement. |
The Movement
The caliber 747 and caliber 730 are both 17-jewel manual wind movements from Hamilton's American production era. They share the same basic architecture, with the 730 being the base configuration and the 747 incorporating a seconds hand complication routed to the subseconds register at 6 o'clock. Both are compact, reliable movements that were well-suited to the slim dress watch cases Hamilton built around them in the mid-1950s.