I have an excellent plus black paint last version (e46 with attached hood) 50 1.4 pre-asph. Beautiful to look at and IQ is superb. Has very slight brassing on ring. Looking for similar condition 28 cron asph. Probably not 1 for 1 trade as the 50 lux does get more than the 28 cron on the used market but details to be negotiated. Thanks....Peter