Check the listing for details. Vintage Brown Ceramic Porcelain Insulators Pair Industrial Mushroom Shape Glazed. Condition: Used. Listed at 13.72 USD. Have wear and tear, see all photos Smoke free pet friendly home Vintage brown ceramic porcelain insulators featuring a rich, mahogany-toned glaze and a classic mushroom-shaped silhouette. These heavy-duty industrial relics showcase a threaded interior and a smooth, rounded top, perfect for repurposing as unique bookends, paperweights, or rustic garden decor. The deep earthy finish provides a timeless aesthetic that complements farmhouse, industrial, or eclectic interior styles. Keywords: Industrial Chic, Farmhouse Decor, Steampunk, Upcycled Art, Telecommunication History, Rustic Home, Earthy Tones, Heavy Duty, Collectible Porcelain, Mid Century, Garden Art, Paperweight, Bookends, Vintage Hardware, Brown Glaze