In theory the 1 starting the RBNr indicates that your ammo pouches were not produced by a big company of the german industry, but rather by a small structure with craftmen...
Nice pair of late war pouches by the way (1943-1945)
Have a look at Ade's link concerning RBNrs....
"I didn't use any weapon in combat during the war, but i killed hundreds, perhaps thousands of men...they're now at the bottom of the sea"
Walter Borg (ex-MI6) Agent and radio operator in Malta, Tunisia and Italy between 1941 and 1945. Arrested twice, tortured twice, escaped twice, survived the war...
"The future torments us, the past holds us, that is why the present escapes us."
In Memoriam :
Laurent Huart (1964-2008)