How to Cash In on Rare Coins

George Lim began his coin and banknote collection 30 years ago with a single note, the first 10,000 Singapore dollar bill he received. "As soon as I made that amount, I saved it to remember it," says Mr. Lim, a Singaporean real-estate developer, whose collection today includes over 100 rare coins and banknotes.

Mr. Lim plans to auction 68 coins and notes from his collection in . . .

Full story at: The Wall Street Journal