Where we read about some poor schmoe who over the years spent about $47,000 on Franklin Mint “commemorative coins,” hoping to use them as a retirement fund… only to find that the whole collection *might* be worth $2,500.
Here’s a general suggestion: anything made and sold as a “collectible” almost certainly isn’t, at least in terms of being a sound financial investment. The things that tend to skyrocket in price are the things that *weren’t* intended for any such role. For instance: I have, somewhere, a whole bunch of “Star Trek” commemorative plates, from back when I was a high school Trekkie in the ’80’s. Exactly the sort of thing that seemed like it should skyrocket in price over time. On eBay they sell at well under the original price. Oh, well.