Seth Thomas Adamantine Mantel Clock
Updated October 16, 2026
| Lot number | 23 |
| Category | Antiques & Furniture |
| Auction | 10-22-2026 Local Collections & A Variety of Treasures |
| Date | October 22, 2026 at 7:01 PM EDT |
| Auction house | Tom Hall Auctions, Inc |
| Location | Schnecksville, Pennsylvania |
This Seth Thomas eight-day mantel clock features a mechanical spring-driven movement housed in a black Adamantine-finished case with faux-marbleized accents. The neoclassical design includes bronze-finished metal castings of lion head sidehandles, decorative columns with female masks, and scrolled feet. A paper label on the reverse identifies the piece as an Adamantine Clock from the Seth Thomas Clock Co., bearing a diamond ST trademark and patent date of September 7, 1880.The off-white dial has black Roman numerals and is accompanied by two winding keys. Measures 11 x 16 x 7 inches.The Adamantine finish shows minor surface wear and dust. light age-related yellowing and staining. Metal components show oxidation and finish loss. The functional status is unconfirmed.
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