Russian commercial variety. The name can be translated as ‘The King of Siberia Orange’ from Russian. Introduced commercially in North America by Tatiana’s TOMATObase Seeds in 2015. Indeterminate, regular leaf plant produces 3-6 oz., orange, plum-shaped fruits that are firm and keep well. Very good balanced flavor. Thick walls. Perfect canner. It is not related to Korol Sibiri variety, despite the similar name.