Unless you mean that it was a pristine low mileage car parked in a garage in an exclusive neighborhood when the owner went into a nursing home 20 yrs ago and isn't running because the battery is dead, it's worth what a scrap metal dealer would give for it.

__________________
1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13