My goodness--my Gilbert and Sullivan.

Series of advertisements for products of Guinness Brewery, based on the theme of Gilbert and Sullivan operas; each poster contains a parody of a song text from one of the operas, together with a color illustration of same and an identification number.
Operas included (with number assigned to poster) are: The Mikado (two posters: G.E.3696 and G.E. 3643), The Grand Duke (G.E.3681), The pirates of Penzance (G.E.3687), Patience (G.E.3697), and Iolanthe (G.E.3695).
"Copies of this page may be obtained from Arthur Guinness, Son & Co. (Park Royal) Ltd., Advertising Dept., 8 Baker Street, London, W.1."