'Hoping that Wagon Logo will get you even in the correct decade is just like
Navigating by Astrolabe .
('See where that got C. Columbus...Thinking The Caribbean was The Indian.)

'Given Stuttgart's penchant for "Standardization",the same visor may be used
not only on different years but different models.

If you will Very,Very,Very CAREFULLY pry the Mirror Insert out (Brittle Plastic)
There will be Part(S) numbers stamped into the plastic inside.
(And a little circular date of manufacture code.)

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'84 300SD sold
124.128