Best of luck on your search.

Follow this 'site for info, particularly Lancaster's 'Mannlicher at Auction' thread: http://forums.nitroexpress.com/showflat.php?Cat=0&Number=230186&an=0&page=0#Post230186
as well as perusing auction 'sites as I'm sure you already are.

Perhaps you'll hit the jackpot and find a Take Down Model.