Being an avid collector of Mint Of The United States At San Francisco ingots, and after a few years now of serious research, I have more questions than answers about these gems. In my ongoing efforts to accurately date and chronologically organize San Francisco examples, I've all but exhausted efforts to locate Mint records that would indicate original production information. And it is not like that those would even help with understanding the number that may remain in existence today, I would imagine that the early silver runs took their toll.
I catalogue every San Francisco ingot that I can obtain information on or a photo of and decided to organize that information as a limited look at the ingots that have seen the light of day in the past +/- 15 years.
I have researched major auction archives including Goldberg, Heritage, Holabird-Kagin and Stack's Bowers, which provide information back to the early 2000's. I also looked at eBay completed listings and obtained information from a number of fellow collectors and dealers, in particular Chris from Old West Gold, Todd, Edward, David who maintained an amazing eBay sales record of silver ingots and Karl who has been very helpful with early auction information.
I am not making any claims about what this information really means but find it very interesting as I weigh my collection against what might be available. I am really hoping for input on this post and look forward to hearing from anyone that can help with the list. The list is limited to Type I examples, separated by series and includes an sample photo of each from my collection.