A few weeks ago I published a post that contained a list of every Mint Of The United States At San Francisco Type I ingot in the 5 oz class that I have been able to obtain information on or a photo of to date. Thanks to Brett and Edward I have added a few to the list and obtained some additional information on two that I already had listed.
I hope to soon have some additional information that will help with my continued efforts in dating and chronological organization of the Type I examples. Bryce is on board and researching old auction catalogues in his vast inventory for early ingot listings or references. Early coin auction catalogues have proved to be a great source of historical information as proven by Karl's input to date.
As stated in the last post, I am not making any claims about what this information really means but continue to see more and more in this information as I study the list. For example, years ago I heard that there may have been tens of thousands of these cast given the popularity of trading scrap silver for government issue ingots. If we fill in the blanks of the numerical ranges represented in each series, that number would look more like 5,000. I like the sound of that but if the next discovery is #9999 I will be posting Part III sooner than expected.
Updated lists follow: