Henry Ernest Dudeney/Puzzles and Curious Problems/7 - Squaring Pocket-Money

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 * Squaring Pocket-Money
 * A man has four different English coins in his pocket,
 * and their sum in pence was a square number.
 * He spent one of the coins, and the sum of the remainder in shillings was a square number.
 * He then spent one of the three, and the sum of the other two in pence was a square number.
 * And when he deducted the number of farthings in one of them from the number of halfpennies in the other, the remainder was a square number.


 * What were the coins?