I still use the original Vilem B. Haan wood shift knob my dealer installed (at my request) before I picked up the car in 1971 -- I never saw my original black knob. One visual cue is the sky blue, rather than navy blue, background color on the knob's Mercedes-Benz logo (their leather key fobs used the same light-blue color). From the snapshot, Richard's knob looks like a Haan.
The problem with wooden knobs of the time was that they were spline-secured -- mine was constantly loosening and even popping off until I decided to just glue it on the shifter.
Vilem B. Haan, by the way, was country's top foreign-car mailorder operation back then, pioneering the high-quality aftermarket gear that we see all around us today. Haan himself (he died a few years ago) was the first president of the Ferrari Owners Club and held membership card number 1.
Bill Greffin
Chicago
#22375