Sunday, December 28, 2014

Mint Of The United States At San Francisco Ingots - Timeline Part II

Based on my research over the past few years, I believe the following presentation represents the chronological order of 5 oz class ingots produced by the Mint Of The United States At San Francisco from the early 1930's through 1959. It also represents all types known to date (5 oz class only). 

A few placements are scientific; the Type I, large font, 999.75 fine ingots are found in M.H. Bolender coin auction catalogs from the early to mid 1930's. I place them first as I have found no earlier references anywhere to Mint of The United States At San Francisco silver ingots. One U.S. Mint Service Bar Delivery Receipt exists in my collection showing that some of the Type I, small font, 999.75 curved stem nine ingots were produced in December of 1942; this provides another scientific placement in the order. Type II, #217, is in numerical sequence ahead of ingots dated 1956, a third scientific placement. And finally the ingots stamped with 1959 hallmarks.

Type I, medium font ingots I place in the order to fit between the earliest produced and those know to have been produced in the early 1940's, and use numerical sequencing as well as fineness consistency to place the straight stem nine ingots before of the curved stem nine ingots.  

The remainder of Type I, small font ingots are placed in the order using the same numerical and fineness characteristics. The #1093, Type I, small font ingot with straight stem nines is an anomaly as it is one of a kind so I have placed in in the transition position from numbered to unnumbered ingots given the fineness match of 999.5.

I have previously written about my theory of the unnumbered ingots bridging the gap between all of those above and the 1959 round dated hallmark ingots. In the presentation that follows on the second slide, the ingot castings and fineness are identical between the Type I, Type II and 1959, lending support to this bridge theory.

This remains a work in progress; I cautiously introduced this post with "I believe". Something may be discovered in 2015 that completely shakes this up and I look forward to any new discovery that helps document the history of these historical gems.

Silver Ingots

Monday, December 22, 2014

Happy Holidays 2014

Happy Holidays to all Silver Ingots Blog followers and readers. My thanks to all of you for your support and continued interest throughout 2014. I hope you enjoy this holiday season with your families and friends.

Silver Ingots

Tuesday, December 9, 2014

Mint Of The United States At San Francisco Type I Ingots - Part X

Just over one year ago this month I published my first post about the very earliest silver government ingot references in old coin auction catalogs. At that time, I had just finished researching a box of 30's and 40's auction catalogs from Bryce Brown's Coin Auction Catalogs and published a spreadsheet showing how these catalog descriptions supported my position that the Mint Of The United States At San Francisco Type I oval hallmark, large font, curved stem nine ingots were the very first to have been produced and date to the early 1930's.

I noted in that post that the very oldest catalog description in the 100th Auction Sale of M.H. Bolender dated November 30, 1935 references previous auction listings of similar ingots, but I have yet to find those catalogs. What I have been able to find over the past year are two additional examples of these very oldest Mint Of The United States At San Francisco silver ingots, bringing to three the total of these lowest digit examples in my collection.  

Based on my research to date, I believe these three examples to be the oldest silver ingots produced at the Mint Of The United States At San Francisco with ingot #77 being the lowest number I have ever seen and therefore the oldest of all examples.

I've updated the original spreadsheet, gray entries are ingots in my collection, yellow highlighted entries are those found in the early coin auction catalogs mentioned above and the remainder are those that I have seen in my ongoing research of information dating back to 1980. Interestingly, I have seen none of the examples in the post 1980 information that are part of the 30's and 40's coin auction catalog listings (yet).

Silver Ingots