It's amazing, but for different people, the same thing can be of different value. There are definitely cultic things of the last century (or older times) that are appreciated by many.
For example, pictures of great people who hang in the Louvre. What will come to them value? The fact that she was painted by a great person or that she is old ?. I think that the value of any thing is given by people. Same as the value of money in the whole world. In fact, money is just pieces of paper (which were previously attached to gold, but now no longer) - but they have value. But you can impose the same value. In particular due to the impact through the media.
Or let us take Ulyanov as an example. Togo Ulyanov who was the leader of the world's proletariat and now lies in the Mausoleum. He is known by many as Lenin. What value does he have now?
But there are things that only units appreciate. On the example of things in the window of the non-store you showed us today. Personally for me there is the value of this watch and photo camera. In the past, I had 2 cameras - one old and metal (I do not remember exactly its name) and a well-known paloidoid. I have a warm feeling for the old days and for such things. But for younger people - these things will not be of value. Now any smartphone performs the same functions and therefore if you are not a professional photographer you do not need to have a separate camera.
This is a good topic for the discussion and you can write a lot about it.
Have a nice day