Possible Clues:

• Debussy checked proof copies of La Mer at Eastbourne’s ____ Hotel
• Piano variety
• Old man deprived of all these years
• Lofty duke following senior relative
• With 111 Across, big number
• Good money abroad? Excellent!
• £1000? That’s good money in Soweto
• £1000? That's fantastic!
• A lot of money? Splendid!
• A hundred sawbucks