Doctor Omega
Member: Rank 10
https://twitter.com/InflatableDalek/status/1091663095288729600
They've got a paper trail for the first 3 Hartnell's to Tel Aviv, and people have seen 60's Who tapes on the shelves, but the station insists it was nevet shown there and won't let them look.
For clarity (from speaking to him afterwards), Tel Aviv were sent telerecordings of just the first two episodes of Marco Polo as a taster (I'm not sure if for the whole series or just the story), and this stands a good chance of being what was seen by a technician there in 2012.