In the name of 'serious research' I carried out some Ebay browsing on the dedicated Italy and Germany sites and pretty much drawn a blank on the above style of Jacket...
Cant help thinking an Historic line of Jacket might be better, especially as it could be a brand new item?
Anyway, is this of any use:
http://www.ebay.co.uk/itm/332448284530 Only a single size 52 or 54 are shown now.
Good luck and best wishes.