Unicornity Questioned

The following darts are UFO's from my perspective.  They are clearly of an earlier era of darting:  fat brass barrels, push-in wooden stems, feather flights.  All of which tells me that they date back to the 60's or much, much earlier.  When I got them they came in a plastic two-piece Unicorn case which, honestly, seems like the perfect case for them in terms of length.  However, I have not been able to find either the barrels or the stems in any old Unicorn catalog.  As such, I question their Unicornness.  Unicornity?

They fly nicely.  Here you can see a nice double-double up top.  I went for a third but it miss wide:

And here are some close ups of the darts and the barrels: