I sometimes work at an office in Bourke Street, and have often noticed this angel sculpture, high on a wall next door to an office building at 160 Queen Street, Melbourne.
I finally decided to photograph it recently. Unfortunately I couldn’t find out any information about the sculptor, and there wasn’t a plaque at the site (that I could find), but it is quite beautiful. The figure looks futurist to me, stylised and holding a wheel. If anyone knows more about it please contact me…
kerynrobinson 
I worked near there on Queen Street too – it looks rather Russian to me.
Found this:
High on the wall of 160 Queen Street is Transportation 1963-64 by Sydney sculptor, Tom Bass. The figure with aeroplane wings stands in a boat triumphantly holds aloft a wheel, perhaps representing modern transportation. The form of the figure resembles a secular crucifix, this is modernism looking back to the ancient ways of representing ideas.
Fantastic! thanks for the information Simon 🙂