Kevin! We NOW know what it is.... I have consulted a German Notgeld expert and sent him your scan. Below was his reply....

Yes, it is notgeld, German emergency money from the inflation. 50 Million Marks issued by the Bavarian (Bayerisch) State Bank in Munich (München) August 1, 1923 as opposed to the Reichsbank in Berlin which was the central issuer up until the inflation.

Sorry it took as long as it did, I am not a Notgeld expert, but I can usually spot onr in the crowd. LOL