These statues are of characters from the Argentinian comic strip Mafalda, which ran in the 1960s-1970s. The strip has been compared to Peanuts, and has remained popular in Argentina, even though it has been out of print for 40 years now. These statues are located just outside the cartoonist's former home in San Telmo.
Coffee and mate vendor in the market. Mate is a South American tea, drunk from a hollow calabash gourd through a metal straw. The man seated next to the coffee and mate cart has a cup of mate sitting on the empty chair next to him.