Possible Clues:

• Having an intact tamper seal, say
• With cap still on, screwing one end up?
• Still in its original packaging
• Like problematic jar of marmalade? End up with one chucked!
• University man receiving old writing implement still in wrapping
• Locked university putting out review by couple of writers
• Like new packages
• Sealed for peacekeeper to ring writer and editor
• Clocked if this would be locked?
• Closed up one end unwisely