Undated Thorne Mining and Refining Co., Arizona Fantasy Silver Ingot. No. 268. 3.47 Troy Ounces. 9998 Fine.26.5 mm x 50 mm x 9 mm. All stamps are on the front face: (Thorne assay scale logo) / MONETARY VALUE / 4 DOLS 47 CTS / CONTAINS / 3.47 OZS. TROY / GOLD .000 / SILVER .9998 FINE / SERIAL NO. 268. The website <em>www.allengelhard.com</em> provides an estimated mintage of fewer than 90 examples for this type.