1: 1. The 1921 Peace Silver Dollar skyrocketed in value, making some collectors instant millionaires. Its limited mintage and historical significance are key factors.

2: 2. The 1794 Flowing Hair Silver Dollar, among the first U.S. coins ever minted, saw a surge in value, turning lucky individuals into overnight millionaires.

3: 3. The 1933 Double Eagle gold coin, originally intended for circulation but later seized by the US government, fetched staggering sums at auctions, transforming owners into millionaires.

4: 4. The 1907 Saint-Gaudens Double Eagle, a masterpiece of numismatic art, holds immense value due to its rarity. It has made fortunate collectors millionaires in an instant.

5: 5. The 1969-S Lincoln Cent is extremely rare due to a production error resulting in the appearance of the rare "Doubled Die Obverse." Owning one could lead to unimaginable wealth.

6: 6. The 1955 Doubled Die Penny, caused by a die striking error, became legendary and turned a few fortunate individuals into millionaires, thanks to its scarcity and desirability.

7: 7. The 1943 Bronze Cent, mistakenly minted with copper instead of zinc-coated steel, brought immense wealth to those who stumbled upon this valuable rarity.

8: 8. The 1804 Draped Bust Dollar, extremely scarce and highly prized, commands astronomical sums at auctions, instantly transforming its fortunate holders into millionaires.

9: 9. The 2007 "Godless" Presidential Dollar, an error coin without the usual edge inscription, gained significant attention among collectors and brought fortune to a few lucky investors. Remember, these rare coins have exceptional stories and hold tremendous value. Investing in them may be a gateway to overnight millionaire status.