With slot, upper, for direction indicators.
From the introduction of the pickup at August 25 1952, chassis number 20-030 590 the semaphore slot was used above the moulding until the 8th of 1957.

With slot, lower, for direction indicators.
From the 8th of april 1957 arranged at lower level below the moulding.
Formerly used above the moulding (261809251)