I think that can be too useful
Fotos with description about sreened KV-1 tanks
http://rkkaww2.armchairgeneral.com/g...es/KV_1scr.htm
Table with data about production of russian tanks see KV-1
http://rkkaww2.armchairgeneral.com/w...tion_20_41.htm
Data about production KV tanks years 1941-43
http://rkkaww2.armchairgeneral.com/w...duction.htm#KV
Data about guns used in rusian tanks
http://rkkaww2.armchairgeneral.com/w.../art_tanks.htm
And about Sights used in this guns
http://rkkaww2.armchairgeneral.com/w...sign_tanks.htm
Good site (In Cyrlic) about KV-1 but you can find Model 1939 even if you can't read in russian like I
http://armoured.vif2.ru/kv-1.htm
Ultimate source and the best what I found too in russian
http://armor.kiev.ua/Tanks/WWII/KV/
About use KV tank in Winter war
http://rkkaww2.armchairgeneral.com/b...ar/KV_finn.htm
And the map of this battle
http://rkkaww2.armchairgeneral.com/m...K_T_100_40.jpg
So this tank model was produced to december 1943. But I read in the book about Polish People army LWP. Two this tank (KV-1) was send to this army in January 1945 as a school equipment. So I think that mean a year after halting the production tank wasn't in line units. Conclusion is this model was retrat from front line somewhere around early/half 1944