Looking a gen I found a flaw on the bezel: the bevel of polished top edge is higher than the rep one. Here the pics of a 243M:
http://www.bmw-sg.com/forums/general-classifieds-non-bmw-related/43667-wts-brand-new-pam-243-m-fullset
Gen Pam 243M
http://www.bmw-sg.com/forums/general-classifieds-non-bmw-related/43667-wts-brand-new-pam-243-m-fullset
Gen Pam 243M