The origin of the IS-1 project came from numerous reports regarding the KV-1. Even in its faster version, the KV-1S, offered no greater fighting capabilities than the T-34, while costing much more and being more labor intensive. The IS-85 (Obyekt 235) prototype started its successful but rushed trials in mid-1943. Production was assumed by Chelyabinsk Kirov Plant. The first IS-1 (definitive series vehicles) rolled of the line in October 1943, but it was stopped in January 1944, as the IS-1 was quickly replaced by the all-better IS-2. Because of this, only 200 to 207 were produced. The first IS-1s delivered were issued to Guards Heavy Tank Regiments reforming after the summer’s heavy fighting. The IS-85 was issued to the 1st, 8th and 13th Guards Heavy Tank Regiments in Ukraine. These were heavily engaged in early 1944 at Starokonstantinov, Korsun-Shevshenkovskiy and Fastov Station west of Kiev. Later on, most IS-1s were found engaged in Slovakia, and were later given to Slovakian free units during the uprising.

This is a test version. This model is adapted for the game scale 1:100. Holes for 5x1 magnets are made on the body and in the turret.
The IS series has a large number of different models. I will post most of them on my Boosty channel. The following models are currently available there:
IS-3
https://boosty.to/ramzay1945/posts/b3d1db19-59f1-4584-9462-1ee3e70f03d7?share=post_link
Object 704
https://boosty.to/ramzay1945/posts/ab52b896-c2ec-4031-9973-ef2878c8b76e?share=post_link
Object 260
https://boosty.to/ramzay1945/posts/5da4c71d-71a7-434c-80cb-542e842f0371?share=post_link
Object 244
https://boosty.to/ramzay1945/posts/04092163-7075-4a02-a9fb-19d29edc80d6?share=post_link
ISU-152K
https://boosty.to/ramzay1945/posts/6ea135fa-040d-42ba-9e27-7056069ea137?share=post_link
ISU-152, ISU-122, ISU-122s, ISU-130
https://boosty.to/ramzay1945/posts/5d40ca7b-f45a-4931-9942-99ee68b92bd5?share=post_link
IS-4
https://boosty.to/ramzay1945/posts/5999f199-396e-40d3-9c16-aba68a683a69?share=post_link
IS-M (IS-2Sh)
https://boosty.to/ramzay1945/posts/6c05d1da-081d-4e20-9c2a-58fc95c68f0c?share=post_link
IS-2M
https://boosty.to/ramzay1945/posts/eeb76f57-67cb-4f6b-9b56-b032d4b672c4?share=post_link
IS-2 and IS-1
https://boosty.to/ramzay1945/posts/15eed9c7-1112-4ca4-9569-a18e0259a6d7?share=post_link
IS-6
https://boosty.to/ramzay1945/posts/372ff26b-c673-4e61-a499-9f309ca9213b?share=post_link
ST-I and ST-II
https://boosty.to/ramzay1945/posts/197b246d-78e1-4122-b3d3-510200b19824?share=post_link
Object 252U
https://boosty.to/ramzay1945/posts/8d5a866a-6ef0-4f68-8b02-cc24ef1802af?share=post_link

If you want to support me, you can visit my blog on Boosty. There I will post my own author's models.
https://boosty.to/ramzay1945

Unfortunately, other ways of placing paid models are not available to me.

My Discord: https://discord.gg/X8AUBy8Ymm