This is one of the most common of early notgeld issues before the inflation really took off. They are worth next to nothing, even uncirculated.
That said, I get the feeling this was hit by a hammer or other similar abuse. After all, this is the same time and place where children used stacks of banknotes for toys, since a bundle of cash was cheaper than a wood block. Anyone stuck with a 50pf coin when a 5,000 mark banknote couldn't buy a slice of bread would probably use said coin for whatever it could be used for--a screwdriver, to level a wobbly chair, or to hit with a hammer out of boredom.