Well, Muckeye? Let me take stock of what I've got...
I buy any Australian coins I can find on principle that if I keep them moving, they'll keep flowing? Especially Pre-decimal. This means I've got a tidy little supply of duplicate pieces. I probably could/should sell them, especially if I'm ever going to afford my 1925 penny that is the last piece I need to "complete" my Penny set. (presuming of course that the 1930 bugger will never be in it.)
Ms Toby, this picture is for you, then.
It's another shilling I picked up in the same place. Someone had sold a lot of early 60's sixpence, shilling, and Florin, and I snatched several of them up. I wish I could have gone and picked up the rest, but I couldn't afford it at the time.