I have never seen real Prakticar 200mmF/4 in the above photo.
(This lens must be a Prakticar 200mmF/4, a prototype I guess.)

This info is kinda interesting, 135mm lens seen beside 200mmF/4
looks like Orestor 135mmF/2.8 which is still saying PENTACON!
At the top right corner the lens seems the second version of 50/1.8
whose MFD is 0.33m, so this photo was made under PENTACON.
I have no idea why they abandoned 200/4, since 200/2.8 had a short
production life. Today almost impossible to get Prakticar 200/2.8.