<p>It is hard to tell but people would not hide an expensive camera unless they had reasons for that. Bloody or criminal history is one of the reason. And there was a value on Rolleiflex, everyone knew it. There were also people in the USSR who could fix them. If the camera came from Germans it would be a legit possession. But if it used to belong to a local Jew killed during the Holocaust the survival relatives could and would report the owner to KGB as a Nazi collaborator. And why a new owner did not throw it away...well because there was a known value on it. Just a guess.</p>