Vintage King Kong Toy Ring

I felt I had found a treasure with this great vintage 1960s King Kong ring in its original packaging.
The front of the package reads, "10 cents: GENUINE KING KONG RING. Feel like the King!" (I'm not sure what a non-genuine King Kong ring would be like, but at least we're assured that this one is the real thing...)
The back of the package features a cut-out membership certificate for the official King Kong Klub, with the club's creed, which reads: "I am entitled to membership because I like King Kong and my Aunt looks a lot like him!"