Big geocoin for special giga event.
The main motive on the front side of the geocoin is a large emblem of the City of Prague. Description on the geocoin is "Geocaching World Meets in Prague - Celebrating 20 Years of Geocaching"
The main motive on the back is the gigaevent logo. As a reminder of the early years of geocaching, there is a ROT-13 decoder on the back that is used to encode hints. Today, the application will do it for you, but years ago, geocachers could read words like "zntarg".
Geocoin diameter is 63,5 mm (2,5"), thickness is 4 mm.