Footage of Chaplin and Marion Davies at the premiere of Marion's film FLORODORA GIRL (1930)
The footage of Chaplin at the beginning is from the premiere of The Circus in 1928. Actual footage of Chaplin from the Florodora Girl premiere starts around the 4:46 mark. You'll notice that his hair is dyed black for the filming of City Lights. Lots of other stars can be seen as well.
Click here to see a some still shots of Charlie and Marion at the premiere.