Road to 2018 FIFA World Cup Russia sticker collection
Wila75 has provided scans of the 50-packet Box available in Belgium. If anyone wants to provide scans of other boxes I only need the side that shows the countries in which it is available, unless the overall design is different.
UPDATE (04-05-2017 14:02): Daniel Nedelcu has provided a few more scans of the box which is available in Romania.
Malta, Cyprus, Czech Republic, Slovakia, Belgium, Hungary, Greece, Slovenia, Croatia, Romania, Hong Kong