That is the picture which was occupying most of this page when I viewed it a little while ago. I was (am) looking for pictures of David Garrick (I've decided to attempt a semester of powerpoints with few words and many images).
The page is titled "Albert Finney as 'Hamlet', National Theatre, 1975".
The photo caption says:
Albert Finney as 'Hamlet'
The National Theatre at the Old Vic, London
Black and White Photograph
It was only when I'd read that last bit about the black and white photograph for the third or fourth time that it gradually began to dawn on me that there's been a mistake with the picture file, and this ISN'T actually a picture of Albert Finney playing Hamlet at the Old Vic in 1975.
I thought the person in the panto cow suit was Albert / Hamlet, and Rosencrantz and Guildenstern were the dames.