The KV-3 was an early war Soviet heavy tank armed with the powerful new 107 mm ZiS-6 gun mounted on a modified version of the KV-220 hull.
Object 223 (kv-3) - Passed for Consideration - War Thunder - Official Forum
WW2 Soviet KV-4 Archives - Tank Encyclopedia
KV-3 heavy tank
Soviet 2s1 Gvozdika SPG (1975)
KV-1 - Tank Encyclopedia
Panzerkampfwagen VI (7.5 cm) VK30.01(H) - Tank Encyclopedia
KV-3 heavy tank
T-150 (KV-150/Object 150) - Tank Encyclopedia
My interpretation of the KV-3 (Object 223) tank. (lore in comments because i have the 'tism) : r/SprocketTankDesign
KV-3 (Object 223) - Tank Encyclopedia
WW2 Soviet KV-4 Archives - Tank Encyclopedia