So only thing missing is the correct adjuster knob, I see them on a few sites for sale but only in pck. of 2.
FYI, I don't believe those are the same chrome knobs. I've been told by more than one source (but unverified by myself) the chrome knobs for the Rallye (not Standard) dash look very similar to the Standard dash clock knob, but are not the same - don't be fooled. Two are used for the Rallye dash cluster.
I can add finding these clock knobs is not an easy task, and when you do, they sell for a premium. It isn't often I see them sell for under $100, so keep this is mind as you search.
There are 5 parts in the knob assembly. Refer to the image.
There was someone selling reproduction ones, a machinist who turned out some on a lathe, and while they were functionally equivalent, they did not not look OEM. The repro ones were one solid unit and brass color.
I'm often on the lookout for these clocks being sold, and it seems common they are sold without the adjuster knob.