Hi there Myles. I’m assuming you mean which the album has the Aspect 2 tracks pressed onto both sides, and never there are only two Aspect 2 labels within the LP. I’ve never observed that kdr prefix within the catalog amount before; are you currently positive it’s not ksd? https://deanuitep.blogpayz.com/26778591/the-definitive-guide-to-led-zeppelin-gold-records