As some of you may know, CommBank have installed coin sorting machines in the customer area, so you don't have to hand over a bag of coins and wait for the teller to tally it and tell you the value, etc. These machines are really nifty; you pour all the coins into a hopper with a little conveyor belt at the bottom, and the coins slowly disappear from view while their value is updated on a little lcd screen. When it's finished it spits out a receipt and you take it to the teller, who either gives you the cash, or puts the money in your bank account. AND, if your coin contains any foreign currency, the coin is spat out into a separate slot for you to collect and take home. I found out today how interesting that assessment is. In the process, the machine rejected what looked to me to be two perfectly valid Australian $1 coins; I put them back in and the machine appeared to accept them. When the whole process was finished, the machine spat out another coin. I thought it would be one of the dollar coins again, but it wasn't. It was an Australian 1966 original silver 50c coin; the ones they pulled out of circulation because the silver was worth more than 50c!!! Obviously the machine was not programmed to accept a coin that old!!! I wonder how many of these coins are still in circulation, though? I know someone who has 150 of them in box under the bed; I'm not sure if he's watching the silver futures market, or whether he's just a hoarder .