The "F" means that it was made in Stuttgart, BW - and in 1983 they made about 24 million of them at that mint. It is a neat coin, I like the design, but the value? Well, somewhere around 50 cent here in DE. Its face value (ie. what you would get if you took it to the central bank) is precisely Ç0.26 ... that would be 43c in AU dollars.