4 Dollars - Elizabeth II Dromaeosaurus

Dromaeosaurus albertensis was named in 1914 from fragmentary material recovered in Alberta's Red Deer River valley — and remains one of the most poorly understood of the raptor-family dinosaurs despite lending its name to the entire Dromaeosauridae. The Royal Canadian Mint's 2010 prehistoric series leaned heavily into Canadian paleontological heritage, a subject the RCM returned to repeatedly through the decade as collector-focused issues displaced circulation coinage in its production priorities.

The .9999 fineness is notably purer than the sterling standard common to most world silver coinage of the period.