Related Clues:

• Vintage designation
• Vintage
• 687 days on Mars
• Junior, e.g.
• Two semesters
• Manage
• Class
• See 64-Across
• Four quarters
• Period of time
• Wine connoisseur's concern
• '00, e.g.
• Subscription length, often
• See 54-Across
• Junior, for one