San Francisco - 5 oz Class Type I, Small Font #, w/ Curved Stem Nines .5
Type I oval hallmark, small font serial number with curved stem nines in 999.5 fineness is one of only two serial numbered series remaining so I place this one next in chronological order as a possible carry over from the Type I oval hallmark, small font serial number with curved stem nines in 999.75 fineness.
The 10 ingot ensemble pictured above represents one of the finest in the entire United States Government Silver Ingot Collection of Ken Conaway and the only No. 1 San Francisco 5 oz class silver ingot that I have ever seen. Primarily assembled with acquisitions from Old West Gold and Old Silver Bars beginning in 2011, there are a few of the missing serial numbers listed in the registry that remain high on my hunt list.
The serial numbers in this series range from No. 1 to the mid 1300's. Interestingly after the ensemble above, the numbers that I have seen to date jump to No. 102. As with every series presented so far, the weight is stamped on the reverse. OZS is either small capitals as pictured above or large capital OZ with a small s and two dots under it as pictured below.
As mentioned in the write up of the very first series presented, Type I oval hallmark, large font serial number with curved stem nines, this is the only other series where a fineness change occurs. The 999.5 found on the majority of ingots in this series changes to 999.0 briefly in the 700's and then back to 999.5 to finish the series. Ingots No. 765 and No. 766 represent the only sequential pair in 999.0 that I have ever seen and No. 1342 is the highest serial number listed in the registry.
The United States Government Silver Ingot Collection of Ken Conaway, 5 oz Class Type I Oval Hallmark , Small Font Serial Number with Curved Stem Nines in 999.5 Fineness.