kennymauser + 1. Near the 'end of era' as Interarms/ original Firearms International of Washington D.C., moving toward sinking into the sunset, the English born Whitworth rifles were petering out. Of Zastava manufacture and mated with wood in Manchester, more of a mix & match between "Whitworth" and the same unmarked edition as increasing.
My 458 Wnchester, Mag chambered, a beautiful rifle, but reflecting "Mark X". No real difference beyond nomenclature. My Mannlicher stocked 30-06 with Whitworth branding; same fundamental metal components quality. As noted, there existed quality differences IF construing principally stock and certain accoutrements. Express sights, hinged floorplates (cross bolt typically for heavier chamberings vs more standard trigger guard bow release), considerable stock differences. Here the net rule to me 'between Whitworth & not'... "Buy the gun 'for the build it is', not the branding!
Just my take

Last edited by iskra; 07/10/21.