here is another 7x57 DWM sporter In the Doublegunshop forum but it looks like a round barrel and not so long like the south african rifles. could it be one of the gifts for a south american order?

checkering on the forearm looks different too.

http://www.doublegunshop.com/forums/ubbthreads.php?ubb=showflat&Number=207243&PHPSESSID=