Great find, Randall. Dates from the 1936-1953 period. Solid advice from Bowen on the stretching part. The Augusta line of hats was likely rabbit felt. I find on Borsalinos it doesn't seem to matter which type of felt it was: they could do miracles with anything. I am thinking though this could be a coffin box homburg. The hats that were sold and sent in those little white boxes included homburgs (which is mindboggling, really) and this could be one of those. The model name is a first: we've never seen a "Nizosca" model before. so for that alone it's unique. Super find.