Possible Clues:

• and 15 across, the drink might have been cheap, but you would have had to keep it under your skirt
• It used to be one quarter of a penny
• Old 13's distant object
• Distant object; it's not worth much
• Distant object is old copper
• Pre-1961 British coin
• Old coin, item out of reach?
• Make out detailed object and obsolete coin
• Distant object, a coin of low denomination once
• Old coin, quarter of a penny