JS3 heavy tank using a 122mm maingun ( the same as JS2)
350 were buid in 1945 , i don't think they were used during battles
but it's a great tank with low profile, very well sloped armor, powerfull gun ,very reliable
it's nickname was the "PIKE" dur to the shape of is front armor !!!
i call it big scale ( wide 16 studs ,lenght 32 , with gun 46 and height 13 )
it's more scaled for "jack stone" size minifig