Antique Cast Iron Skillet Identification Guide

Reading the Marks on Old Skillets

Most people who pick up an old Griswold or Wagner skillet online think the date code is printed somewhere obvious. It isn't. The maker usually stamped the manufacturing date into the pouring lip or between the handle arms, and the marks are tiny, shallow, and often worn smooth from a century of scrubbing. If you can read them, you know roughly what year the pan was cast. If you can't, you still have the pattern number and the company logo to work with. That alone will get you 90% of the way there. The first thing I do is clean the surface enough to see the grain of the iron without stripping the seasoning. I use a little heat and a brass brush. Wire wheels strip too much and make the marks harder to read afterward. Once the surface is just clean, I hold it under a bright light at a low angle so the stamping throws a shadow. That shadow is where the date code hides.

Antique Cast Iron Skillet Identification Guide

Here is how the three major players actually mark their pans, and where they hide the information. Griswold skillets carry a large eagle in a circle as their primary mark. The word "Griswold" sits inside the eagle, with "Erie PA" above or below. The size number is stamped under the handle on the cooking surface. Early pieces, before about 1880, may have no date stamp at all. Around 1898 Griswold started adding a small numeral inside the circle indicating the decade — that's not a year, it's a batch marker. The real date code lives between the handle arms as four digits where the first two are the year and the last two are the week. A mark like "1247" means 1912, week 47. These numbers are tiny, usually 3 to 4 millimeters tall, and easy to miss because they sit right under the pour spout where heat and scrubbing hit hardest. Wagner uses a crossed hammer and wrench logo with "Wagner" inside. The size is stamped on the cooking surface, usually near the rim. Wagner didn't consistently stamp date codes on most of their production runs. Some later pieces from the 1930s onward have a small letter or number near the handle, but it's not reliable for dating. The serial numbers Wagner did stamp are mostly for internal tracking and don't decode cleanly for buyers. You date Wagner pans by tracking changes in the logo style and the font used on the size stamp.

Lodge is the odd one out because they are still making pans today. Early Lodge pieces from the 1920s and 1930s have a small "L" logo and the size. Modern Lodge uses a simple "Lodge" stamp with the size below it. If you find a skillet with a date code that looks like Griswold's format, it's not Lodge. Lodge never used that system. I ran into a specific problem last year with a Griswold that turned out to be a reproduction. The eagle mark looked right. The weight felt right. The date stamp between the handle arms read "2013" which should be impossible for an antique Griswold since the Erie factory closed in 1907 and the brand was sold. But this particular pan had the post-1980 Nova Iron Stores marking, which is technically a Griswold rebrand, not a reproduction. The trick was the bottom. Antique Griswolds have a smooth, machined cooking surface with a slight taper. This pan had a rougher texture and a raised ring around the bottom edge that never appeared on genuine Erie-made pieces. The real giveaway was the pouring lip — reproductions have a thicker, more pronounced bead along the spout edge. Here is something most guides don't mention: the depth and style of the stamping tells you more about age than the text itself. Early Griswold marks are deeply impressed into the iron because they were stamped into the mold before casting. Later pieces, especially those made in the 1940s and 1950s, have shallower stamps that look almost painted on. If a Griswold has a crisp, deep eagle with sharp edges, it's likely pre-1920. If the marks look soft and faint, it's probably a later production run. This doesn't hold perfectly for Wagner because their stamping process was different from the start.

Weight is another thing people get wrong. A Griswold No. 8 skillet should weigh roughly 4 pounds, but actual weight varies by batch. The casting process meant each pan had slight differences. If your No. 8 weighs 3 pounds, it's either a smaller model than it appears or it's been heavily machined on the cooking surface, which sometimes happened during refurbishing. A 5-pound No. 8 is possible but unusual. The handle design is a dead indicator for Griswold. The early "smooth bowl" handles with a flat top appeared from about 1880 to 1910. The "star" handle with the five-pointed star cutout came later, around 1910 to 1940. After that, Griswold simplified the handle shape again. If you see a Griswold with a star handle and a date code that says "1895," something is off. The star handle didn't exist yet. That's a reproduction or a mismatched part. For Wagner, the handle evolution is less dramatic. The main change is in the logo. Early Wagner had a simpler logo without the crossed tools. The crossed hammer and wrench appeared around 1900. Wagner also switched from a rounded handle tip to a flatter one in the 1930s. Those are subtle shifts but they matter if you are trying to narrow down the date range.

The biggest pitfall in identification is trusting a single mark. I've seen people authenticate pans based only on the eagle or the size stamp. That is insufficient. You need to cross-reference the mark style, the handle shape, the bottom finish, the weight, and the pouring lip. If any one of those doesn't match the expected profile for the claimed era, the pan is suspect. Reproductions are getting better every year, and some are close enough to fool a single-feature check. Another thing that catches people off guard: many antique skillets have been refinished or resurfaced. A Griswold that was ground down on a belt sander will have a very smooth, almost shiny cooking surface where the original stamping was partially or fully removed. The remaining ghost marks can look authentic to an untrained eye. If the stamping looks freshly cut rather than aged and worn, that's a red flag. Genuine old marks have micro-scratches and patina consistent with the surrounding iron. Refinished marks look clean and isolated. Measurement matters more than people realize. Griswold size numbers don't always correspond to the actual diameter in inches. A Griswold No. 8 measures about 8 inches across the top rim, but the cooking surface is closer to 7 inches due to the tapered walls. If someone lists a pan as a No. 8 and it measures 9 inches, it's either mislabeled or it's a different manufacturer entirely. Wagner sizes are closer to actual measurements, but there is still a 0.25 to 0.5 inch variance depending on the batch.

The bottom of the pan is usually ignored but it is one of the most useful features for identification. Griswold bottoms evolved from rough, sand-cast surfaces to smoother, machined finishes over time. Pre-1920 Griswolds typically have a rougher bottom with visible parting lines from the mold. Post-1940 pieces are smoother. Wagner bottoms tend to stay relatively consistent throughout their production, which makes them harder to date by that feature alone. Lodge bottoms are generally smooth and uniform, which helps distinguish them from the older pieces. If you want to verify a specific pan, take clear photos of the cooking surface, the bottom, the handle, the pouring lip, and the interior side walls. Good lighting is essential — natural daylight works better than indoor bulbs. Measure the diameter at the top rim and the height from bottom to top rim. Compare those numbers against published reference tables. Griswold sizes and weights are well documented. Wagner data is more scattered but available in collector forums and books like The Cast Iron Skillet Book by Bill Barley. Lodge production data is straightforward since they are a current manufacturer with documented specifications going back decades. The main limitation of this approach is that it only works for the three major brands with well-documented marking systems. Regional manufacturers like Providence, Mercer, and Farberware used different conventions, and their identification is less straightforward. Some of those marks are recorded in specialized catalogs, but many are still being deciphered by collectors. If you find a skillet from a lesser-known maker, don't expect a quick answer. The identification process can take weeks of research.

Another limitation: extreme wear or damage can make identification impossible. A pan that has been overheated, quenched in water, or heavily ground down may have lost all distinguishing features. In those cases, the best you can do is estimate the approximate era based on remaining design elements and general construction style. Don't claim certainty where none exists. For practical use, the goal of identification isn't just to satisfy curiosity. Knowing what you have affects how you treat the pan. An early Griswold with a properly seasoned cooking surface can last another century. A poorly maintained pan from any era will develop cracks or warp. The identification process itself teaches you how the pan was made and what to expect from it, which informs your maintenance choices.