'Victoria' was the trademark of the manufacturer Schmidt & Co. and actually introduced before WW1. They were located in Altrohlau - the town formerly was in Austrian Bohemia, then became Czech after the founding of Czechoslovakia in 1918. Bohemia (and especially Western Bohemian with its masses of resources) was one of those areas that Hitler wanted "back" in his Third Reich, based upon the historic borders of the Great German Empire. Altrohlau (today Stará Role, Czech Republic) was actually quite small, but a central road and railway hub - hence it was predestined as logistics hot spot (the whole infrastructure was also used for transfers to the concentration camps Tüppelsgrün and Flossenbürg).
Many manufacturers received contracts from the Wehrmacht, the Kriegsmarine or the Luftwaffe (and marked as such) but in this special case the ole dimwit SS-boss Himmler himself wanted one single manufacturer for 'his' items ... hold in mind that he already 'owned' his own factory for figures and items used in old Germanic rites in form of the Porzellanmanufaktur Allach (Bavaria) which already relied on slave workers from the Dachau concentration camp.
Taking into account all the SS barracks, strongpoints and offices that existed in WW2 Germany one can easily see that such enormous amounts of this stuff were produced that faking it is absolutely no option as literally tons of it are still around today (and freely available even in Germany).