P.S. I think the production numbers are hurting these values. The "certificated parade" cars I think are a breed unto themselves, as are the Silver Arrows. Special Edition SL cars (those two, plus the Mille Miglia manual cars) may command premiums. But I don't know about the value curve for R129s generally. I suspect it's been dampened by the 500E's shine -- which is arguably the best thing to come out of Mercedes from '88-'98.