The Franklin Mint has produced ”collector” items for several decades. The word collector is in quotations because the items that they sell are not really collector items. Yes, people do have them, and keep them, so in the very broad term they are ”collectible”.
The problem with items that are made to be collectible tend to have a negative return on investment. Most things that you can save or collect over time that end up having value are everyday items (like toys or clothes or furniture). They were not made to be a collectible, but people save them because the items are unique or scarce or remind them of their childhood (or a certain time period in history they have interest in).
The only upside to Franklin mint items is that a lot of what they produced (especially in the 1970’s) was made out of sterling silver. Herein lies the value of any of their stuff. Unfortunately, most of the items they sold were at such high premiums that there is little to no hope of actually getting a positive return on your money.
Today, many other companies market based on the Franklin Mint model. They either use the word ”mint” or other official sounding words to make people believe they are getting something of value. Or, they promote an item as ”collectible” or as something that will appreciate in value. Unfortunately most of these companies are the only ones who are getting a good return on their investment, while the consumer is left holding a fancy box!