In message
,
Mizter T writes

I think the W&C line station at the Bank end was indeed once called
(and signed) "City", so things would likely have been different then
(CULG doesn't help me on this though).

Yes, it opened in 1898 as "City", changing to "Bank" in 1900 when the
City and South London extended to Moorgate (although the CSLR station
was originally proposed to be called "Lombard Street").
--
Paul Terry