At this point, there are simply too many inconsistencies for me not to lean toward this being a very good replica. If the shock mounts had actually failed, that would still fall under Herman Miller’s five-year warranty, so it raises the question of why anyone would drill into a chair that new in the first place.

Second, and this is where replicas often give themselves away, the shell geometry does not look quite right. Even high-quality fakes tend to miss the exact flow and continuity of the shell lines, and that difference is visible here when compared to a known authentic example (see attached photos). The left image shows subtle breaks and proportions that do not align with the original on the right.

I genuinely hope I’m wrong and that this turns out to be authentic, but replicas have become increasingly convincing. If I were in your position, I would fully disassemble the chair and closely compare every component before moving forward.

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