This is a classic dexterity puzzle made from Wood and Glass where the player has to manipulate a small metal ball on a course to the final objective (Berlin) while avoiding many holes.
This is a scare relic of anti-German propaganda aimed at children during the First World War. Manafactured between 1914-1918. 
This game is meant to suggest the trenches of the Western Front which in fact, the British Public believed to win the war by Christmas 1914 as it was named “The Silver Bullet” for a quick win and during the time of this being created, the troops weren’t dug out in their trenches.
“Very collectible, don’t see this too often, most are damaged or broken, good relic to own”
“It took me about 15 minutes to actually win this and get to Berlin as you can see from the last photo!”