Pre-Decimal Coin Nicknamed a Bob
Puzzle 19 of Paper Crafts Hard Pack
Question is: Pre-Decimal Coin Nicknamed a Bob
and the answer is: SHILLING
Word Meaning:
SHILLING — (historical) A coin formerly used in the United Kingdom, Ireland, Malta, Australia, New Zealand and many other Commonwealth countries worth twelve old pence, or one twentieth of a pound sterling.
Definitions from Wiktionary.