Gelb 14: I'm not sure how significant the army buckles are. I have seen army buckles on Land Customs hangers. Matter of fact there are two sets of hangers shown in Johnson's latest dagger series on pages 801 and 802. Apparently the presence of army buckles doesn't seem to be a requirement for authenticity.
But postwar made dagger hanger of nearly any kind made with original leftover materials have been made. As a result on many hangers the time of manufacture is pretty hard or even impossible to determine. Considering that these hangers are almost impossible to find I would certainly keep them. The average collector doesn't have the luxury to be too fussy about Water Customs hangers.