In real life, multi-coloured light pillars appear in the sky when low-level ice crystals reflect the light from below. On this selectively coloured coin, the atmospheric optical illusion stays hidden in the night sky until the invisible black light technology is activated by UV light.
Specifications
No. 174007
Mintage 5,000
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 (reverse), Susanna Blunt (obverse)