One of the beauties of junk yard shopping is that you can try out this kind of a swap. If it were me, I'd visit a local U pull it yard, and carefully remove a sunvisor from a W124 ( or any other candidate car) and try it in a W123 also at the yard. If it fits, and you like the look, who cares if it is a "perfect" replacement? After the trial fitting, I would return the sunvisor to the donor vehicle, if I did not want to buy it.

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1982 300SD " Wotan" ..On the road as of Jan 8, 2007 with Historic Tags