I understand based on your previous post for your E30 m3 that you have ordered plenty of BMW Classic parts. E46 & E39 parts are still being produced & are older than the E53. The classic catalog? Are you talking about this list of parts https://www.bmwgroup-classic.com/en/...oductions.html

BMW Classic is reproducing specific parts that have become high demand through worldwide ordering requests to my understanding of that system. I'm not sure who makes them vs who makes the non classic branded parts but they do state that they are a reproduction or the original part.