Switzerland has returned two stolen ancient artefacts to Greece, the Culture Ministry in Athens said on Thursday. The artefacts are a stolen fragment of a stone inscription bearing proper names, and a second fragment from a marble colonnade dating back to antiquity in Greece to Athens, the ministry said. The stone fragment indicates it dates back to the third century BC and came from the island of Kos. The second fragment came from the city of Corinth and from the Roman period between the first and second centuries AD. The artefacts were handed over to the archaeological department of the regi…