Says in the ad they are stamped with the ACS logo, and definitely in need of a refurb. If genuine the BIN price seems pretty reasonable...
http://www.ebay.co.uk/itm/GENUINE-BMW-AC-SCHNITZER-ALLOYS-E36-E46-Z3-Z4-/261036775484
Nothing to do with me
http://www.ebay.co.uk/itm/GENUINE-BMW-AC-SCHNITZER-ALLOYS-E36-E46-Z3-Z4-/261036775484
Nothing to do with me