Somehow this old auction from 2014 popped up on my radar today:
https://www.bonhams.com/auctions/21749/lot/228/
Only adding it here for the records and mostly for the fact the first owner part-exchanged it for his Daytona. Now I'm curious to know who the 1st owner was.
18101 was bought new by Sharps Advertising Limited, London, probably for its Chairman, Mark Ramage, who subsequently bought two 400s.
Mr Ramage had previously owned a Daytona and a number of other V12 Ferraris.
Both his 400s also still exist and are in very good condition. His second 400i is the well known one in New Zealand
File:1981 Ferrari 400i (19741484936).jpg - Wikimedia Commons