The Original Ponzi

What actually happened

International postal reply coupons genuinely could be bought cheap in inflation-wrecked Europe and redeemed for more in the US, and Ponzi's pitch of 50% in 45 days pointed at a real gap. The catch: redeeming at scale was impossible, and Ponzi barely tried. New deposits paid old 'returns,' and Boston formed lines around the block.

Clarence Barron (of Barron's) did the arithmetic publicly: covering Ponzi's liabilities would require 160 million coupons, and roughly 27,000 existed. The Boston Post's investigation, which won a Pulitzer, cracked the run; Ponzi surrendered in August 1920 having destroyed six banks and most of his depositors' savings.

He spent years in prison, was deported, and died poor in Rio, proud in his last interview that he'd given Boston 'the best show since the Pilgrims.'

The play to remember

A real anomaly plus impossible scale is the con's favorite disguise. Always ask what the trade looks like at the size of the promise.