Possible Clues:

• After half a century it might get potentially pitched
• Pound on the canvas in the end, potentially
• During Lent one may get at what is hidden
• How the French gets pitched in a potential manner
• Potentially existing but not evident
• Existing but not yet active, say talent
• Hidden talent, perhaps
• Not (yet) apparent
• Dormant talent should be developed
• When overdue, a lot of books may be hidden