One common comment coming from consumers is “I have some old ones, they’ll have value”. This can be in reference to coins, or currency or jewelry or collectibles. It is a very common misconception that age makes things more valuable.
If you own a house you know how this is not true. Often, with age, comes problems like wear and tear. But a house in an area in demand can appreciate at any age. The same is true for collector items of all kinds. The value is based on the availability (supply) and who wants it (demand). That is why you can have coins from the time of Christ that are only $10 and yet see coins that are modern sell for thousands of dollars.
The lesson here is that age does not equal value. Some times things just get old.