Australia 5c 1981

Hello everyone, I was just looking at my Australian 5c (N#70), and noticed the 1981 date has three mints. While the image in comments say two of the mints cannot be distinguished, they are listed separately, so I'm wondering if there is something I'm missing? Thanks!

You're not missing anything, SCWC does not mention those 3 mints, but the coins were minted in all three locations in 1981, unfortunately there's no difference between  the dies used by RAM and RML, but we know they were minted in both places because of the mints accountancy.