The duPont car is a SOHC 6.0 - not a quad cam - if you look closely at the engine pic. Given that, the value in the $30-$35k range is probably solid. Value is highly volatile based on the total picture and package. If the suspension bits are old and have not been replaced, the tranny needs work, if the rear engine seal is weeping, etc... can all add up to a chunk of needed maintenance, regardless of very low miles.
If the duPont WB is fresh with all new MB bits, then high $30's - $40K is very fair. I know I wouldn't take a penny less than $35k for my AMG - its essentially 100% new (mechanically). If the duPont car had Recaros, door wood and refinished wheels, it would be worth over $40k. If it had a 32v engine plus the above, $45k.
Value is based on rarity (i.e. widebody), provenance (original AMG docs, ownership history, receipts, matching #'s on engine/tranny), condition (how fresh are the mechanicals, condition of the paint and body), and high value options (Recaros, AMG suspension, Sebring exhaust, wheels, engine mods).
You see it time after time at Barrett-Jackson auctions - the rare cars with matching #'s, verified VIN's, recent big buck restorations and the right original options = highest prices.
2009 W211 E63
1984 500SEL AMG -5.4L, Sebring exhaust, full suspension, 2.82 LSD, 8"/9" wheels, Recaros, door wood, Clarion rack stereo. Anthracite Grey/Black
1985 500SEC AMG Widebody, 199/278, 5.4L DOHC 32v, Sebring, suspension, fridge
1990 560SEC AMG 6.0L, 149 Arctic White/Blue
1994 E500, 147 Polar White/Grey
1990 560SEC, 199 Blue Black/Black (Japan)
1991 560SEC, 040 Black/Palomino
1961 220SEb Coupe
Last edited by alydon; 01-07-2011 at 11:57 AM.