Saw this one sell on ebay, I bid on it but too rich for me. I had a K98 pouch with the same marking, made from the same leather. This is NOT postwar Czech.
http://www.ebay.com/itm/GERMAN-WWII-G43-K43-FIRST-TYPE-MAGAZINE-POUCH-1944-/321039085072?pt=LH_DefaultDomain_0&hash=item4abf6bae10
http://www.ebay.com/itm/GERMAN-WWII-G43-K43-FIRST-TYPE-MAGAZINE-POUCH-1944-/321039085072?pt=LH_DefaultDomain_0&hash=item4abf6bae10