1924 German Paper Document Rigaer Commerzbank Windauer Filiale (Bank Check?)

Description

1924 German Paper Document Rigaer Commerzbank Windauer Filiale
Very old. Comes as shown. Has wear such as folds, creases, discoloration, fading, etc.
I really don't know what this is. It looks like a check to me, but it also looks like it has a postage stamp on it.
If you're looking at it, you probably know what it is. Feel free to let me know!
Refer to the photos to know exactly what you are getting.
Approximate size of paper: 9.75" x 4.25"
Will ship quickly and safely!
For seller's reference: drawer 5