The cat. no. is PRIVATECJ-2 because there is also another 6-Track Promo with cat. no.
PRIVATECJ-1 which has the same cover and differs from this one only for the last track which is Sailing to Philadelphia instead of What It Is
Nice item! This is the PAL edition, in slimcase. For the same title there is also the NTSC version, released by Warner Bros, which comes in standard jewelcase with front and back inserts.