The 2019 sterling-silver Crown and Tickey set includes a R2 crown-sized coin, a 2½ c Tickey coin and a stunning sterling-silver model of the Ranger 9 spacecraft packaged in a beautiful piano finish varnish, walnut wood box.
The 2019 Crown and Tickey series features the history, invention and development of polymer putty as well as its journey to the moon. Invented by South African George Montague (Monty) Pratley, the world famous Pratley Putty was developed in the 1960’s as an insulator and an adhesive agent for fixing brass terminals which were located inside cast iron cable junction boxes.
This putty was used on the Ranger spacecraft produced and flown to study the moon. This American spacecraft was the first to land on the moon and thus helped lay the groundwork for the successful moon landing and safe return of a human during the NASA Apollo XI mission. | 
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