Roland,
The Bosch number resembles this: 0-231-000-000, and mine is :0231 184 006 , which doesn't seem to be a part known in USA (Pertronix cannot find this part number in their Bosch books); it makes your "grey market theory" very credible. It is installed on a Carrera 3.0, which is not supposed to have been regulary imported in the USA, even though there are some specimens overseas...
has anyone a clue , about my upper question (why do I have to reduce the points gap?)
?