San Francisco Mint Cast Silver Ingot. Undated Type I Oval Hallmark. Large Font, Curved-Stem 9s. Ingot No. 180. 6.89 Ounces. 999.75 Fine.34 mm x 53.5 mm x 13.5 mm (greatest dimensions). The oval hallmark at the top of the front face is boldly and evenly impressed. Below the hallmark is the number 180 in large font and fineness 999.75 / FINE., with curved stem 9s. The weight 6.89 / OZS is on the back face, the bottoms of the letters a bit soft from an uneven stamp. All other faces are blank, minor casting imperfections are most prominent on the outer faces around the edge. Originally and attractively toned overall in warm pearl gray, this is a handsome and desirable ingot.<p>According to Ken Conaway on the website <em>silveringots.com</em>, the 5 ounce class with Type I oval hallmark, large font in the serial number and curved stem 9s in the fineness is the first series of silver ingots produced by the San Francisco Mint. The earliest examples in this series are of fineness 999.75,as here, and they date to the early 1930s. The fineness for this series eventually changed 999.50 and, finally, to 999.0.Collector tag included.
