Hi Manfred,
Any non scripted Campy skwer levers bent ARE done after ex-factory, some net as early as 1960's. the very first 78 CPSC complient ones have "OPEN-CLOSE" engraved along with curve.
Soon after "Campagnolo" writiing became scripted looking.
I do have very rare dotted trim non scripted curved handle with OPEN/CLOSE stapmed pair, which is done in factory.
Best Regards,
KEN TODA, High Point, NC
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