The parallelogram is definitely late NR. There's no bolt for the spring and the rivets are hollow stainless. The adjuster screws have springs rather than plastic cones, so they're earlier. Cage is Rally. Pivot bolts and cage spring cover are NGS. It looks like a kludge from the spare parts bin.
I've got a NR with Rally cage on my Heron, and it works just fine.
Leonard Bulger Ann Arbor, MI Swearing at a French steerer and spilling cutting oil on the carpet tonight.