I recall that I saw a diagram of Soyuz 16 (the full ASTP rehearsal performed by Filiptchenko and Rukavishinikov in late 1974) made by Schliadinsky in a magazine. It featured the docking ring simulator. I never saw another drawing, nor a actual flight hardware photo of Soyuz 16 and its docking ring simulator. Does anyone have something on this subject?
The photo is from Soyuz 19 in assembly shop and the rendering is my view of Soyuz 16.