After 1963 I believe??? Cole-National owned Kabar and started to put model numbers on the tang. Between like 1951? And 1963 ka -bar was written like that. Before 1951 it was like yours KA-BARSweet thank you. I have been looking around unfortunately I have not been able to find this knife on the net I was thinking it's somewhere around 70s I have not been able to identify the area of tang stamp.
A lot of axe lovers here. Sorry to here about your D2 extreme helluva bladeLol no issue at all. I'm down to just my Gransfor Scandinavian axe and this new buy. Recently lost my kabar d2(second one....) and no longer have a bunch of others such as seal pup, cold steel ak / srk and a few Kershaw.....to name a few. Expensive hobby...