On my copy in hands, the matrix/runout side B is identified with a mistake : 2C006814577B Rights Society: SACEM SDRM SACD SGDL Matrix / Runout: 2C06814577A (Side A etched) Matrix / Runout: 14577 A 1 M6 322 507 2 (Side A stamped) Matrix / Runout: 2C06814577B (Side B etched) Matrix / Runout: 14577 B 1 M6 322 508 2 (Side B stamped) Price Code: SE