Also in the old days, i.e. the ponton era, there would also often be a two digit prefix for a part number that indicated whether the part was for a sedan (#10), a cabriolet (#30) or a coupe (#37). To search those part numbers today, the prefix needs to be made a suffix or left off completely.

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Len
'59 220S Cabriolet-SOLD and living happily in Malta
'83 240D 351,500 miles original owner-SOLD
'88 560SL 41,000 miles - totaled and parted out
https://sites.google.com/site/mercedesstuff/home
'99 E300 turbo 227,500 miles
'03 SLK320 40,000 miles - gave to my daughter
'14 Smart electric coupe 28,500 miles
'14 Smart electric cabriolet 28,500 miles
'15 Smart electric coupe 28,000 miles