The Brain-Killer Affair - S1-E23
Revealing mistake: Solo pushes the chief from Calcutta's wheelchair into an elevator in UNCLE headquarters. The floor going into the lift, however, is visibly solid, with no break to allow for a real elevator's movement. (00:14:55)
Answer: He must have ridden in an Eaton's store elevator while he was in Canada at some point. For some reason, this elevator reminds him of it. The show's original concept had Solo being a Canadian, so this may be a minor nod to that fact.
raywest ★