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1 Cylinder » R25, R26, R27 (50 - 66):
R 24 (0T10) (08/1948 - 08/1950)
R 25 (0T11) (08/1950 - 08/1951)
R 25/2 (0T12) (08-1951 - 03/1954)
R 25/3 (0T13) (08/1953 - 04/1956)
R 26 (0T14) (08/1955 - 08/1960)
R 27 (0T15) (08/1960 - 08/1966).
Isetta (01/1955 - 09/1962):
Isetta 250, Motocoupé, 1-Cyl
Isetta 300, Motocoupé, 1-Cyl.
1 Cylinder » R25, R26, R27 (50 - 66):
R 24 (0T10) (08/1948 - 08/1950)
R 25 (0T11) (08/1950 - 08/1951)
R 25/2 (0T12) (08-1951 - 03/1954)
R 25/3 (0T13) (08/1953 - 04/1956)
R 26 (0T14) (08/1955 - 08/1960)
R 27 (0T15) (08/1960 - 08/1966).
Isetta (01/1955 - 09/1962):
Isetta 250, Motocoupé, 1-Cyl
Isetta 300, Motocoupé, 1-Cyl.