To unlock the "Antegrian Token" trophy in Papers, Please, you must allow a husband and wife through to Arstotzka despite some discrepancies.
The event occurs on Day 5, November 27th. The eighth entrant is an Antegrian male. His papers are valid and you must let him through. He mentions his wife is up next, and she is indeed the ninth entrant. She is missing her entry permit. "Find" the discrepancy and interrogate the woman, and then allow her entry. She will pass over the token, and the trophy will unlock.