Online collector communities are often the best resource for learning about an unidentified piece of vintage hollow ware. However, vague “what is this?” posts—typically consisting of a single blurry photo and no supporting details—frequently go unanswered or result in unhelpful speculation. Because much of the production history for 19th and 20th-century foundries was either lost or never formally documented, research must be pieced together through a combination of empirical evidence and visual comparisons.
What this article covers
This article provides a systematic checklist of the physical characteristics you should record before seeking community feedback. By organizing these observable traits into a structured format, you provide the data necessary for researchers to offer more accurate observations. For guidance on the photos themselves, see The Cast Iron Photos That Actually Help When You Ask “What Is This?”.
Checklist of details to include
Before posting your request, ensure you have documented the following identifying marks and physical features. These are observable characteristics worth recording for research purposes and do not serve as definitive proof of a specific brand, era, or rarity.
- Gate Mark: Note the presence and placement of any raised lines on the bottom of the piece, which are remnants of the casting process.
- Pattern Number or Letter: Identify any alphanumeric inscriptions, such as “3B”, “8CX”, “710D”, or “1053C”.
- Logo Style: Describe the appearance of any manufacturer logos or trademarks, including the specific font or layout.
- Heat Ring Details: Document if there is a protruding rim on the bottom circumference. Record its position (e.g., at the outer edge or inset) and note the count and position of any notches.
- Size Number: Record the large numeral found on the top of the handle or the bottom of the piece, which originally designated the stove-eye size the pan was intended to fit.
- Clear Photos: Provide high-resolution images from multiple angles, including the full bottom, handle details, and close-ups of all embossed or incised marks.
Template for community feedback
Using a structured template helps the community process your request efficiently. Consider using the following format:
- Item Type: (e.g., Skillet, Dutch Oven)
- Size Number: (e.g., #8)
- Visible Marks: (e.g., Pattern Letter “B”, Molder’s Mark “4”)
- Physical Traits: (e.g., Inset heat ring with three notches, bottom gate mark)
- Photos: (Link to a gallery or attach multiple clear shots)
Preparing your records with SkilletLog
Scrambling to gather these details after a community member asks for clarification can be a burden — see Sharing Your Cast Iron Finds and Restorations Without Overexposing Your Data for how to share what you’ve documented without exposing your private records. We designed SkilletLog to centralize your collection records from the moment you acquire a new piece.
The app features a Cast Iron Ledger for tracking your inventory and a Restoration Log to document the transformation of your ironware. When you are ready to seek input, the “What Is This?” Share Card feature generates a structured summary of your piece’s observable traits and photos, making it easy to export for community discussion. Additionally, the Duplicate Check feature allows you to instantly search your existing collection by brand and size to ensure you are not tracking a redundant item.
You can start organizing your research and records by downloading the app here: SkilletLog on the App Store.
Summary
Useful feedback from collector communities depends on the quality of the data you provide. By documenting gate marks, pattern identifiers, and heat ring styles using a structured template, you replace vague questions with a well-documented research request. This disciplined approach to recording observable traits ensures that the history of your collection is preserved and accurately discussed.
About the sources for this article This article is edited by the Kore Apps team based on official manufacturer information, public references, and specialist sources, from a recording and organizing perspective. Numeric, specification, and safety-related claims are verified against primary sources where possible.
This article organizes information from a recording and organizing perspective. Follow the manufacturer’s specifications and safety instructions when using or caring for cookware. If you notice an error or outdated information, please contact us. Last verified: July 2026
