Probably there's not many that remember one of the most popular board wargame which dominated the 1970s - PanzerBlitz. I still have a copy of the Avalon Hill General that evaluated the playing pieces. The playing pieces were counters that represented tank platoons or companies. One of the ubiquitous units was the KV-85 tank company. These seemed to be in the order of battle of at least 25% of the scenarios. Later when I got into miniatures I wanted to run these tanks but GHQ did not make any.
Eventually, CnC made some but they seemed too small and unimpressive so I passed on them. What I found is that only 148 were ever built and in only 3 months (7/43-9/43). These were an intermediate step for a Soviet heavy tank to counter the German heavy tank Tiger I. KV-85 linklinkPhoto linkBlue Print link The next step was the JS tank, the first version was the JS-85 which is also known as the JS-1. Only 130 of these were built in only 4 months (10/43-1/44). The development history was pretty complicated and not straight forward. Here are some links to their histories. JS-85 linklink There is however a problem with the armor values. There is the unfortunate photo of a captured KV-85 which armor thickness was analyzed.
As can be seen on the photo to the right where the turret front and side is an impressive 110mm thick. The gun shield/mantlet is 95mm thick. (Note that the armor angles are given in the German form as from the horizontal.) The hull looks like it is exactly like the KV-1S hull but the glacis armor value cannot be seen so that is only assumed.
From the official armor scheme of the KV-85 is as the scheme to the right. It shows the lower front hull armor is 75mm @ 30° and not as the photo evidence shows 60mm @ 25°.
In comparison is from the official armor scheme of the K-1S where the lower hull is the correct value.
Click images to enlarge
It's possible the KV-85 armor scheme shown is that of a rebuilt KV-1 model 1941 or model 1942. Apparently a few were made from recovered hulks. However, the turret armor is still wrong.
Another vehicle based on the KV-1S is the SU-152. One of these was captured and analyzed by the Germans. We can see in the photos on the right and below that the glacis is indeed 50mm @ 70°. SU-152 development. link
Thus we now know the complete armor basis of the KV-85. So a corrected KV-85 armor scheme can be generated as shown to the right.