Related Clues:

• It's always sharp after a century and a half
• Bright enough to get the prize at last
• It's always smart after a century and a half
• Smart enough always to get about a hundred and fifty
• Smart enough to get the prize after a century
• Smart enough to be always under a century and a half
• Bright as ever after a century and a half
• Always smart after a century and a half
• Smart enough to get the prize under one hundred
• See if one is smart enough to get the prize
• Always the last to be smart
• Always after a century and a half this gets smart
• The smart century gets the prize
• Always leave 'er, by the sound of it, after a century and a half
• Smart so to be always below a hundred and fifty