The car had them when I bought it, I was told, and believe this if you like, I guess I do...
The car was origanally ordered for a director high up in Fiat, this director requested the seats to be retrimmed in that leather. So they were standard seats that had been retrimmed, they weren't recaros though, but the late side air bags seats. When I bought the car I got a shed load of paperwork, and there wasn't a receipt for a retrim, but neither was there an original invoice, so I can't confirm the truth or otherwise...
But its a nice story anyway