The Currency Transaction Report (CTR) came into existence with the passage of the Currency and Foreign Transactions Reporting Act, better known as the Bank Secrecy Act (BSA), in 1970.
http://www.irs.gov/compliance/enforcement/article/0,,id=113003,00.html
I was told at a Professional Bank Services seminar that the amount would equate to $53,000 today if adjusted for inflation.
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No, I didn't lose my mind. It got scared and ran away.