1: "Store Kennedy half dollars in acid-free holders to prevent damage."

2: "Keep coins in a cool, dry place away from direct sunlight."

3: "Store coins in airtight containers to protect from moisture."

4: "Avoid handling coins directly to prevent oil transfer."

5: "Use gloves when necessary to protect coin surfaces."

6: "Consider storing coins in a safe or vault for added security."

7: "Regularly check stored coins for any signs of corrosion or damage."

8: "Rotate stored coins periodically to prevent wear on one side."

9: "Keep an updated inventory of your Kennedy half dollars for easy tracking."