Introduced in the 1950's, the "professionnel" steel headset came in a nice presentation box - this was a component to be proud of! Early versions had "Specialites TA" embossed around the lower section of the locknut (as can be seen below), and a toothed lock washer, while later versions, such as that shown in the center drawing, sometimes omitted the toothed washer. One of T.A.'s few non-alloy components, but with the same quality construction and finish work they are known for to this day.
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