> I could work up some more theories for the annals of milsurplus forensics > ;-) If that flat piece is the genuine article, that might explain a lot. > You could have the "grail" and not know it. Looks more like a bracket or > other chassis or mounting part. The grail for RAK nuts is the loop antenna coupler. Very few were made. William Donzelli aw288 at osfn.org