Mid 20th century flats in East Melbourne

These flats are on Simpson St in East Melbourne. I liked the similar but different look of each section. I asked my friends at the ever helpful Walking Melbourne forum and got the suggestion that the flats represent three different periods, possibly c.1939 for the block on the far right, c. 1945 for the left and c. 1960s in the middle. My favourite is the late 1930s section with the rounded concrete and slit windows.

c.1939

c. 1945

c. 1960s