This little tin is old. We've been in Australia since 1971 and I'm pretty sure my mum didn't bring it with her from where we were (Italy). So that means she had corns in the early 70's in Australia and kept the nifty tin. When the contents were used up my father started using it as a little 'knick-knack' tin. Then finally it was passed onto me last year.
They aren't that rare, because I've seen a few on ebay sell for 99 cents!