>>212758520 (OP)I was talking the other day about the actress Debbie Reynolds, who did the same.
As she put it; she didn't know stocks, and hand no interest in horses or land. But what she did know was movies.
So she started to buy selected props and costumes from the studio's after production finished on films she thought important; or starring people above a certain level.
She collected for decades. When she decided to cash out, her collection auctioned off for something like $20 million.
https://www.hollywoodreporter.com/movies/movie-news/how-debbie-reynolds-almost-single-handedly-saved-hollywoods-history-959852/
The pre-auction promotional book is on the internet. If you look through it, you'll see some pretty famous items.
https://archive.org/details/a45_debbie_reynolds_catalog_full_web_final/mode/2up