BBC2 1972 to 1974 era

BBC2's 1969 ident was on film and consisted of a rotating cube with coloured number 2's spinning round, after a lengthy formation sequence. In 1972, this was simplified and mechanised, coloured using Luma-Key with a blue background and cyan ident. Here we see a start-up recreated from the era. Please forgive the slight mistake on the shadowing of the clock...

The original start up was something I found on YouTube...