Cartoon referring to Green [trading] stamps

Ink drawn cartoon referring to Green [Shield] stamps. It does not refer specifically to Sainsbury's. Signed by 'Illin[g]worth'.

Mr Alan Sainsbury launched a campaign against these stamps which some retailers gave a way for customers to collect and exchange for gifts as a means of gaining customer loyalty. Mr Alan argued that the costs of the scheme would have to be bourne by the customer in the form of higher prices.