Thank you for finding this video. Absolutely fascinating. I had heard of these Russian machines, but never seen one. I think I am right in saying that Olympia never fitted the SGE50 with two paper rests, but otherwise it is an identical clone. It is showing its age though. The escapement silent return needs adjusting, or maybe a new silent return plate, and that constant rattling is possibly age-hardened drive belts. The only real Achilles Heel of these machines was that the shift cam would wear on its' pivot and start wobbling from side to side as the shift was operated. Once you removed the ribbon cover and looked downwards to see that, you knew that it was only a matter of time before a new cam was needed - an awkward job to fit I remember !