From Wikipedia:

Mercedes-Benz has sold a number of automobiles with the "280" model name:

1959–1968 W111
1967–1971 280SE Coupe & Cabrio
1969–1971 280SE 3.5 Coupe & Cabrio
1968–1971 W113
1968–1971 280SL
1968–1973 W108
1968–1972 280SEL
1968–1972 280SE
1969–1971 280S
1971–1973 280SEL 3.5 (& 4.5 - North America only)
1971–1973 280SE 3.5 (& 4.5 - North America only)
1972–1976 W114
1972–1976 280
1973–1976 280C + 280CE
1975–1980 W116
1975–1976 280S
1977–1980 280SE + SEL
1977–1981 W123
1977–1981 280E
1975/12–1986/01 W123
1975/12–1981/07 280
1975/12–1985/12 280E
1977/04–1980/03 280C
1977/04–1985/08 280CE
1978/05–1986/01 280TE
1994 W202
1994 C280

tw's knowledge might be limited to the M110 "280"; and more's the pity.