I don’t think it was worn, the entire surface of the wings were very shiny and metallic with a silvery gleam that was hard to photograph. I think the markings were subtle rather than worn away
Could be either A. munda or A. infusa (Bogong Moth), I agree with Don. I don't think we can be sure in this case. A. munda can be very light coloured. A. infusa tends to be chocolate brown, but either are quite variable.