Hi nivadoclassico and Ruedi,
Let's start saying that the 2600 catalogs have shortcomings as they don't mention the Carello reference for the outer and inner 2600 Sprint light rims. So that won't help us.
This is what I could find in Carello catalogs:
2600 Sprint outer rim > Alfa # 102.05.65.109.00 > Carello # 07.535.012 . > for 7" (170 mm) light unit
2600 Sprint inner rim > Alfa # 106.02.65.100.00 > Carello #
07.256.012 . > for 5.3/4 " (136 mm
) light unit
It is strange that your outer rim has the Carello number of the small inner light rim !!
Maybe the two Carello numbers were mixed up in the Carello catalogs
or Carello stamped the wrong number on your rim.
If your rim was stamped wronly indeed and your rim was a postage stamp, you would have phylatelic gold in your hands !
FWIW in the Carello catalog:
2000 Sprint 1a (*) rim Alfa # 102.05.65.108.00 > Carello # 07.534.012 . > for 5.3/4 " (136 mm
) light unit.
(*) '1a' means first series ?
Because a 102 number was used for the outer rim of the 2600 Sprint an not a 106 number ( see above) , it is likely that the outer rims of the 2000 and 2600 Sprints were one and the same: Alfa # 102.05.65.109.00 > Carello # 07.535.012 .
However, I can't confirm that from my 2000 catalog as that catalog does not list the Sprint parts.
Maybe someone else can check which Alfa & Carello numbers are indicated for the 2000 Sprint inner and outer rims ?
Rgds,
Thierry