Guardsman I
1955–1957 · 10k Yellow Gold Filled / Stainless Steel · Manual Wind
About the Guardsman I
Made from 1955 through 1957, the Guardsman I runs on either the caliber 748 or caliber 735, both 18-jewel manual wind movements housed in a 10K yellow Gold Filled case with a stainless steel back. The dial is sterling silver with applied gold numerals at the even hours and luminous gold dots filling the remaining positions, giving it a clean, symmetrical look that reads well on the wrist. One practical detail worth knowing upfront: Hamilton offered the Guardsman I in both right-hand and left-hand wind configurations, meaning the crown could be positioned on either side of the case depending on the buyer's preference. The Guardsman name ran across several models in this era, and the Guardsman I represents the entry point into that lineup.
Numerals on the Guardsman I are applied gold, so the first thing to check on any example is whether all twelve are still sitting flush and intact. The silver dial can develop a warm patina over decades, which many collectors find appealing, but any moisture intrusion tends to show up as uneven toning or spotting beneath the crystal. Finding one with its original crown on the correct side for the variant you're looking at is a small but satisfying detail to confirm.
From the Catalog
Hamilton's 1955 catalog described the Guardsman I as having 18K gold numerals and luminous dots on a sterling silver dial, with the added convenience of right or left-hand wind to suit the wearer. It retailed at $82.50 on a bracelet, with a strap configuration available at $75.00, and was listed as waterproof provided the original seal was restored after any servicing.
Hamilton Catalog Images
1955
1956
1957
What to Look For
| Dial | Check that all applied gold numerals are present, seated flat, and undamaged. The silver dial is prone to spotting or uneven patina if moisture has gotten in at any point. Minor aging is normal; separation, corrosion, or discoloration around the edges is worth factoring into condition. |
| Crystal | Confirm the crystal is free of deep scratches or chips. A correct replacement crystal matters here because the caliber 748 requires a longer cannon pinion to position the hands properly above a domed dial profile. |
| Movement | Ask about service history. The caliber 748 is genuinely difficult to reassemble correctly. Four gear train wheels need to align precisely, and the escape wheel pivot is easy to break if any force is applied during the process. A watch that has not been recently serviced by someone familiar with this caliber deserves extra scrutiny. |
| Case | The 10K gold-filled case can show wear through to the base metal at high-contact points like the lugs and caseback edge. Light wear is expected, but check that the gold fill is not flaking or worn through entirely in spots. |
| Crown | Confirm whether you have a right-hand or left-hand wind example, and verify the crown is present and correct for that variant. The Guardsman I was sold both ways, so a crown on the left side is not a repair or modification, it is an original configuration. |
The Movement
The Guardsman I was fitted with either the caliber 748 or the caliber 735, both 18-jewel manual wind movements built to Hamilton's quality standards of the mid-1950s. The 748 in particular has a reputation among watchmakers for being difficult to service, not because it is fragile in normal use, but because reassembly demands that four wheels align simultaneously before the movement will close correctly. In daily wear, both movements are capable and reliable when properly maintained.