The August 6, 2023 E-Sylum had a short article titled "U.S. Mint Struck Pesos, Junk Dollars" along with a link to the Stack's Bowers website article.

I became interested in the 1949 Mexico 1898 Peso restrikes in 2004 and wrote a short article about them which is on my personal hobby website at https://www.brianrxm.com.

Some of my article was researched from a 1968 numismatic magazine article by the numismatist Dr. Alberto Francisco Pradeau titled "The San Francisco, California, Mexican Pesos of 1898", for the Azteca Numismatic Society's newsletter "Plus Ultra", September 27, 1968.

Dr. Pradeau mentions that some people who attended the American Numismatic Association (ANA) Convention in San Francisco in August 1949 and toured the San Francisco Mint witnessed pesos being struck.

The San Francisco Mint struck a total of 2,000,000 Mexico 1898 pesos, 1,250,000 in fiscal year 1949 and 750,000 pesos in fiscal year 1950.This is according to the "Annual Report of the Director of the Mint" for 1949 and 1950. Both reports are available on the Newman Numismatic Portal

I do not believe that any of the 2,000,000 San Francisco Mint pesos have survived.

All of the pesos struck at the San Francisco Mint were taken to the vaults of the nearby Bank of America and then sent back to the mint for melting.

The 1898 restrike pesos available to collectors are from the 8,250,000 pesos struck at the Mexico City Mint. As all of the coin dies were prepared in Mexico it would be impossible to tell if a peso was struck at Mexico City or San Francisco.

To read Brian's complete article, see:
The 1949 San Francisco Mexico Peso Restrikes BrianRxmCoins struck by the San Francisco and Mexico City MintsFor the Nationalist Republic of China(https://www.brianrxm.com/comdir/cnsmain_mexicopesochina.htm)

To read the Mint Reports on the Newman Portal, see:
Annual Report of the Director of the Mint for the Fiscal Year Ended June 30, 1949(https://nnp.wustl.edu/library/book/340/)
Annual Report of the Director of the Mint for the Fiscal Year Ended June 30, 1950(https://nnp.wustl.edu/library/book/341/)

To read the earlier E-Sylum article, see:
U.S. MINT STRUCK PESOS, JUNK DOLLARS(https://www.coinbooks.org/v26/esylum_v26n32a29.html)