2015 Canada $20 Dollars Fine Silver Coin - Summer Storm - Weather Phenomenon

In nature, there are few displays of raw power that are more spectacular and breathtaking than the sudden flash of a lightning bolt against the dark sky. Through the innovative use of technology, all the power and light of a thunderstorm on a hot summer day blows across this coin's surface, re-creating Mother Nature's most electrifying light show to stunning effect—all in the palm of your hand.

Specifications
No. 148514
Mintage 8000
Composition 99.99% pure silver
Finish proof
Weight (g) 31.39
Diameter (mm) 38
Edge serrated
Certificate serialized
Face value 20 dollars
Artist Tony Bianco and Arnold Nogy (reverse), Susanna Blunt (obverse)