Mclarwn F1 chassis 054 drivers seat

I have acquired the test seat for the Sultan of Brunei's McLaren F1 GT, chassis 054. It had been left in someones attic and is a little scruffy so needs a tidy up, but im at a loss to where to.price such a thing. I have had it confirmed to be real from some higher ups at McLaren and am now looking st the best place to list this for sale.
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