Possible Clues:

• Lines in books
• Property? Ton may be carried by donkeys
• Cash, owned property, etc.
• Stock, bank deposits, real estate, etc.
• Valuable traits
• Properties that have money value
• 'I, that am a relict and executrix of known plentiful -- and parts, who understand myself and the law' (William Wycherley, The Plain Dealer)
• A small class has property
• Like collections? All to the good
• Capital permits? Number falling