I have never run across a W126 that was later than a 1991. I have seen a 420 that was registered as a 1992, but it was a very late 1991 plus a DMV screw up.
So for all practical purposes 1991 was the last year. MB has been building cars in South Africa for quite a while, its possible a few were made with parts that were sitting around for certain clients.
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1999 SL500
1969 280SE
2023 Ram 1500
2007 Tiara 3200
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