as well as WD's,WC's and later series such as D15's are real common around here.This is dairy country after all.But WD45D's are ultra rare here also.I only ever remember seeing one around here myself,and it was entered as a collector at the county fair one year.I myself own a WF.2 WC's,and a WD.Been looking for a WD45D for years to restore and use.No such luck.I don't think they ever made that many of them to begin with.Love my 220D Mercedes though.