In Volume 3 of the light novels, Kokabiel and his men stole three Excaliburs from the Church, while four of the Excaliburs were temporarily fused into one by Valper Galilei.
In Volume 3 of the light novels, Kokabiel and his men stole an Excaliburs from each Church. Shortly after stealing Irina's sword, the four stolen Excaliburs were temporarily fused into one by Valper Galilei.