Here are some definitions of the terms antique and classic
http://automotive-insurance.suite101.com/article.cfm/classic_vs_antique_car
The 300SDL is ALMOST antique, but will never be a classic as defined by the Classic Car Club of America, which has very strict requirements...

Even my 1957 Chevy Nomad would not be a classic under their rules and that was one RARE car, rarer than my 1996 Impala, 1971 Buick GS and my 300SDL...
__________________
"I have no convictions ... I blow with the wind, and the prevailing wind happens to be from Vichy"
Current
Monika '74 450 SL
BrownHilda '79 280SL
FoxyCleopatra '99 Chevy Suburban
Scarlett 2014 Jeep Cherokee
Krystal 2004 Volvo S60
Gone
'74 Jeep CJ5
'97 Jeep ZJ Laredo
Rudolf ‘86 300SDL
Bruno '81 300SD
Fritzi '84 BMW
'92 Subaru
'96 Impala SS
'71 Buick GS conv
'67 GTO conv
'63 Corvair conv
'57 Nomad