Auto Cal Weatherly
1973–1974 · 14k Gold Electroplate / Stainless Steel
About the Auto Cal Weatherly
Made from 1973 through 1974, the Auto Cal Weatherly is a round-cased automatic built with a 14k Gold Electroplate over stainless steel case with a gray dial. It belongs to Hamilton's Auto Cal family, a line of automatic watches that Hamilton produced during its Swiss-transition era. At 36mm in length and 11mm thick, the Weatherly has a presence on the wrist without being oversized for its time. Hidden lugs give the case a clean, integrated look that was a hallmark of this period in Hamilton's design vocabulary.
The gray dial with applied indices holds up well when it's been kept out of moisture, but check carefully for any ghosting or separation around the markers, which can happen when humidity gets behind the crystal over decades. The 14k solid gold case is a genuine selling point here, not Gold Filled or electroplate, and the metal should show honest wear rather than the thin patches or base metal exposure you'd see on plated cases. Finding one with an intact crown and undamaged case back threads is worth confirming before purchase.
From the Catalog
Hamilton's 1972 catalog listed the Weatherly with a gray dial in 14k gold electroplate with a stainless steel back, priced at $125.00 on strap or $135.00 on bracelet. The production Weatherly, however, was made in 14k solid yellow gold, which puts it a step above what the catalog entry might suggest at first read.
Hamilton Catalog Images
1972
1973
1974
1975
What to Look For
| Dial | Look closely at the applied indices. They should sit flat and even, with no separation at the edges or signs that moisture has crept underneath. The gray dial surface should be consistent in tone, without blotchiness or fading in patches. |
| Crystal | Check for deep scratches or a fogged interior surface, which can indicate moisture intrusion. Even though this watch was originally water resistant, vintage seals are long past their service life and should not be trusted. |
| Movement | Wind the watch fully and let it run before trusting the timekeeping. Dried oil creates enough friction to stop a vintage automatic even when it appears to wind and set normally. Ask whether it has been serviced recently. |
| Case | The 14k solid gold case will show wear, and that is expected, but look at the lugs and case edges for any cracks or repairs. Hidden lugs can sometimes mask damage that is not obvious at first glance, so examine from multiple angles. |
| Crown | Test the crown through all positions: winding, setting. It should move smoothly with no grinding. Case backs on watches from this period can be stubborn, so check that the back has not been forced or marred by a prior opening attempt. |
The Movement
The Auto Cal family used Swiss-made automatic movements during this period, with Hamilton's calibers from this era sharing roots with ETA-based movements that were well-regarded for reliability. These are self-winding movements that wind through the motion of the wrist via a rotor, requiring no manual winding during regular wear. They are not complicated to service but do need proper lubrication on schedule to run accurately.