First the 1894 S dime.

The story of SF Mint Superintendent John Daggett giving any of the 1894 S's to hisdaughter Hallie is a complete falsehood. We made three separate trips to Siskiyou County,California to investigate, and found that Hallie had absolutely no knowledge of this issue.Further inquiries, in various national newspapers, found that SF mint officials confirmedthat in June of 1894, the mint had melted several thousands of dollars of uncurrent silvercoin to make into new denominations, and at the end of the melt they had but enough leftover to strike just the 24 pieces - thinking at the same time that they would strike morelater in the year. The 21 pieces (3 total were sent for assay - one for the AssayCommission's yearly test, and two for a special assay) were then placed in a mint coin bag,and sent on their way - and yes, that bag may have made it to a bank in Ukiah, California.There was never any special striking ceremony for their production.

Now the 1870 S Silver Dollar.

SF Mint Coiner, Joseph Breck Harmstead, sent back to Philadelphia two reverse dies, forthe 3 dollar gold - neither of which were sent from Philadelphia with the requiredmintmark S. He did not send back any silver dollar dies since they had several reverse dies(with mintmarks) available for use from previous years. Two well known silver dollarexperts from the Liberty Seated Collectors Club have determined that the obverse die for this issuewas actually a Carson City obverse die sent to SF - because SF never had one sent to themfrom Philadelphia. Thus, a SF request for one from Carson, that mint complied.

Lastly, the 1870 S three dollar gold.

We have researched this coin extensively as well, starting with our book on JosephHarmstead himself, that we wrote in 2005. He, unfortunately, never notes in his records thereason for his striking of the second coin, except for the reported accompanying note withthe coin (that note is missing). And yes, he did strike two pieces. In 2006 or so, wediscovered a government warrant expressing exactly what coins were placed into that SFMint cornerstone in May of 1870, and it includes a second piece. (That cornerstone'slocation is known to us, but we are not at liberty to divulge).

In addition, we have recentlytheorized that Harmstead struck one of those pieces for his wife, Frances. After her deathin 1886, Harmstead gave it to his stepdaughter. Harmstead died in 1889, and hisstepdaughter died in 1901. The husband of his stepdaughter then took possession of thecoin, with the accompanying note, and gave it eventually to his son (his only child) whowas a teacher in New York City. This son sold it to Henry VanCamp, and well you knowthe rest."

To read the earlier E-Sylum article, see:
A 100 GREATEST U.S. COINS COLLECTION(https://www.coinbooks.org/v28/esylum_v28n19a17.html)