1924 one sided German note

I have an old note I’m sure it’s worthless. I’m just curious if anyone can tell me anything about it. My grandfather gave it to me 40 years ago and I can’t find this exact one online. I think it is from January 1924. Thank you for looking.

Try comparing it to this one, I can't see yours clearly enough to check

20 000 000 Mark (Deutsche Reichsbahn) - Prussian province of Berlin – Numista

Don't know anything about the specific note but for a further point onto your research here is the catalog entry.
N#221684 

Thank you!

DizzyBlue

Try comparing it to this one, I can't see yours clearly enough to check

20 000 000 Mark (Deutsche Reichsbahn) - Prussian province of Berlin – Numista

 

Thank you. I think this is it.