Money seldom changes hands... Gold seldom leaves vaults. Reports of gold sales by one bank to another seems to be legal fiction. It accounted to the nearest 1 or 0.
Legal tender is also legal fiction.
"... all about money..." was an exaggeration.
Disclaimer: Mark Twain (1835-1910-To be continued) is unlicensed. His river pilot's license went delinquent in 1862. Caution advised. Daily Paul ☑