The 1932 US Caramel set is a 31 card set featuring every President from George Washington to Franklin D. Roosevelt. The cards came in 3 different colors: red, orange, and blue, blue being the rarest of the 3.
When you purchased a package of candy, you received 1 President card in the package. The company offered a prize if you acquired and mailed in all 31 cards: 1 pound of chocolate. Here’s the catch: they withheld the William McKinley card from distribution so that people would keep buying their candy, and they would never have to give away a free pound of chocolate.
This William McKinley is considered the T206 Honus Wagner of vintage non-sports cards, with roughly 10 copies known to even exist. In 2014, an SGC 5 copy sold for $96,000. Because of how rare and expensive this card is, collectors consider the set “complete” at 30 cards without the McKinley.
Here’s a picture of my complete set that I’ve worked on over the past couple of years. I’m working to finish the set in all-blues, which is the rarest color by far as mentioned above. There are a few complete sets out there that I’m aware of, however I’ve never seen an all-blue complete set.