East German, Strichtarn, magazine pouch. Enough said.
 
These magazine pouches were used by the East German military during the Cold War. They would hold 4 AK-style magazines and would be strapped to the combat belt.  
 
Two different variants are available. The first is the more common late pouch, which is straight, and the second is the earlier variant where the pouch is curved like a banana. 
 
These can also fit 30-round AR magazines and anything else in similar sizes. 
 
They are in great condition with minimal wear, but since they are Cold War surplus, please expect some fading, stains, fraying, and/or small rust stains.