This set of four coins are struck in sterling silver and are the same quality as the cased proof silver dollars.  These coins are highly sought after today, with a high silver content, popular design, and extremely low mintage.    

Tonkinese: Produced by crossbreeding the Siamese and Burmese. They share many of their parents' distinctively lively, playful personality traits and are similarly distinguished by a pointed coat pattern in a variety of colors. In addition to the modified coat colors of the "mink" pattern, which is a dilution of the point color (as in watercolors), the breed is now being shown in the foundation-like Siamese and Burmese colors: pointed with white and Solid overall (sepia.) They are also now designated a natural breed, as their history has now determined them to have been extant since the 14th century.

Lynx: A Lynx is any of the four species within the medium-sized wild cat genus Lynx. The name "lynx" originated in Middle English via Latin from a Greek word, derived from the Indo-European root leuk- in reference to the luminescence of its reflective eyes.

Cymric: The Cymric is the only one specifically bred to be tail-free, these particular tailless cats are the result of a natural genetic mutation. 

Cougar: The Cougar, also commonly known as the Puma, Mountain Lion, Panther or Catamount, native to the Americas. Its range, from the Canadian Yukon to the southern Andes of South America, is the widest of any large wild terrestrial mammal in the Western Hemisphere.