My link uses Google Translate from Polish to English.
New potential tier 5 RU Heavy. Really does look like the IS-3A. But will it wreck tier 5??
(emphasis is mine).
The KV-1SA is a heavy tank with an inverted automatic reloading system. This vehicle carries a 76mm gun and a 6-round magazine. The damage per shot is 110 HP and the penetration of the standard AP rounds is 120 mm and the penetration of the standard AP rounds is 150 mm. The reload time is 4/5/6/7/8/9 s, respectively, the aiming time is 2.5 s, and the accuracy is 0.45.