I, too, have read about more than one cover for 69. I cannot prove that my cap is, in fact, "born with", but I have every reason to believe it is, as the orig. master cylinder is on the car (off now) 12B Nor. Bill, here goes:
Will also comment on the cap you picture Bill, I understand that there was no DOT specification in 69, so that cap would be wrong,IMO.