Reading through some stuff on the interwebs I came across some information saying that some old Soyuz Capsules are keep in a junkyard. Does anyone know if it's actually possible to purchase one of these old space capsules?
The descent vehicles of the Soyuz spacecraft are approximately half reusable. The most expensive structural elements are reused. Therefore, the cost of a used descent vehicle is high. However, sometimes these descent vehicles are sold. Recently: Technik Museum Speyer in 2010 acquired Soyuz TM-19.
CITE DE L'ESPACE in Toulouse, France in 2017 tried to acquire Soyuz MS-03. Probably unsuccessful.
Science Museum, London in 2017 acquired Soyuz TMA-19M.
Some descent vehicles had a very complicated history and can be found in unexpected places. In any case, the cost of acquiring them will not be cheap.
P.S. Компания «Главкосмос» выставила на публичную продажу оригинал спускаемого аппарата космического корабля «Союз МС-08». Цена аппарата публично не озвучивается, поскольку является предметом коммерческих переговоров. До этого предприятие не продавало капсулы.
The company "Glavkosmos" has put up for public sale the original of the descent vehicle of the Soyuz MS-08 spacecraft. The price of the device is not publicly announced, since it is the subject of commercial negotiations. Before that, the company did not sell the descent vehicle. https://www.trade.glavkosmos.com/news/3345/
Yes, there is a lot of Space legacy left behind and many used systems are not properly preserved in Russia and other CIS countries, I think through the right channels one might be able to acquire it. Complications could arise if the nation which would be purchasing might not yet possess the technology as well as any other political barricades.
Also if one is planning to acquire such a system for exhibition purposes, make your mind as it would be very difficult and would have a lot of bureaucratic procedure in the middle. The proposed systems should also be sufficiently old and not in use / planned for any future operations( this includes the materials, manufacturing methods, study purpose and etc.)
Many Russian museums and universities have their own used space systems and components which were either gifted by the industry or lobbied through their alumni.
Honestly, most of these space capsules are burnt and charcoal in colour, it is better to request them to build a mock model for exhibition purposes.
PS: I am a student in Russia .))