The mirrors in the first link look similar, though really hard to say with that weird setup and angle. I am struggling to see the stalk angle from the base and the angular form. The second link has mirrors that do not belong on a 240z.
PM your email and I will send you pictures of the original mirrors. I have no idea how to embed them in this forum.
Over the years, I have been preserving this car as a 'surviving' example of an early 240z. I am not restoring it but simply maintaining it to a very original standard. I was fortunate to buy it off the original owner who amazingly did nothing to it at all. Including plastic protection on the inner panels from the factory, original 2 sets of keys and nissan key case, D hubcaps etc - all the stuff you just don't get. Needless to say, I bought the car on the spot.