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EF was one of Rand's final logos, in 1994. The specific BASF logo with the swirl posted above is around a decade later, but there were earlier versions; the lettering dates from 1986.
Edit 1: here's a 1990 tape:
I'll have to check when I get home, but I also have a sample of the swirl element on a box of reel-to-reel tape which I think dates from the 1970s.
You may wish to retract 'numbnuts'.
Edit 2: here's a 1979 race livery:
Other way round.