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.
1975 FERRARI 365GT4 2+2 BERLINA
Coachwork by Pininfarina Registration no. KKJ 453N Chassis no. 18101 Engine no. 18101
Update 1-11-2022:
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
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