. . Style
of knob with drawing is what a 1970 roadster came with.
Knob shape is the same for all 68-70s. Attachment method
(stud) is what possibly only some of the cars came with.
It is difficult to get the knobs off without breaking
them so I haven't been able to check many of them. The
chrome ring can be unscrewed off of the stud if you don't
have that style. Most roadster lighters I have seen do
not use that trim piece.
Datsun
Roadster Cigarette Lighter Knob from Rallye Enterprises,
Ltd.
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Datsun
1600 2000 Cigarette Lighter Knob from Rallye Enterprises,
Ltd.