https://www.goldenstatemint.com/1-oz-Aztec-Calendar-Silver-Round-999-Fine.html
They claim .999% pure for $26.75 check or wire. Seems like a reasonable price compared to the other silver options.
Silver is silver when the SHTF. .999% is better than sterling .925%
you might be able to get silver blanks or bars a little cheaper per oz, us mint silver looks to be over $33/oz on this site.
Bags of old silver used to be cheaper, and could be easier to use in exchange after the SHTF because dimes and quarters will be smaller than 1 oz rounds/coins. My 2 cents.
"Silver is silver" has been my thoughts as well, until recently GSM has been my go-to for monthly purchases, but comments were made that it's authenticity could be doubted without the USD stamp.
Test kits are cheap, many choices on Amazon.
Scale, calipers, and ping.
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