Can objects be lost media?

So, I collect antiques. I have many that are nowhere online. So I was wondering if this is lost media. I mean in definition it is but is it worth looking into. I have a few items that are somewhat bizarre, like a company that seems to be completely non-existent online and a doll that has an odd appearance that is nowhere to be found from a fairly well-documented company. Of course, these items are antiques so they're rather old (the two examples are from 1920 to the 1950s and the other is from the 1950s so it may be helpless). I just wondering if I should upload all I know about them and people can help me.  Thank you for reading

            - Courcy