Is this the original case for the 1955-63 Australian silver Melbourne mint proof sets?
There's an auction house on Sixbid now offering a run of the Australian proof coins from 1955 to 1963. Some are said to be in the original cases used by the mint to hold the coins. I cannot find any information to confirm this statement, although the firm in question seems reliable. Can anyone more knowledgeable than I am weigh in? Thanks.
Here's a photo of one of the cases: