No, it is worth 37 cents.
Many people sell antique toys on eBay. People also sell antique toys, such as original and vintage toys, on Etsy. One can also go to This Old Toy and Antique Toys to purchase antique toys.
No, it is not a Forever Stamp.
Not exactly. An artifact is like a piece of pottery. Antique toys are just that, antiques.
One can find antique Fisher Price toys on eBay or on websites that are specialised in that kind of toys. There are at least four websites one can find on Google when searching for antique Fisher Price toys.
It will say forever on the stamp. If it doesn't, it may be one of the non-denominational issues that has a fixed price. See the link below.
There are various online stores you can buy antique toys including Fat Brain Toys, Toys Around the Clock, Landers Toys, Antique Toys, Time Warp Toys and more.
It is a forever stamp. It is good for the current value of a first class stamp.
There are many places where one can purchase antique Marvel toys. One can try specialist live auctions and antique stores. Failing that one can try sites such as eBay.
A first-class stamp is not the same as a forever stamp. A forever stamp holds the value of a first-class stamp regardless of how often the rate for first-class postage has increased. A first-class stamp only holds its face value.
Yes. that is their purpose, to still be valid.
Yes, you can use a Forever stamp on a postcard, but it's overpaying for postage.
Yes, you can ... forever ...