I don't see those on the Alkem site in N scale, now, even under "discontinued". So, I assume they are gone. Of course somebody else could etch the same thing. But, I think it is the "little fiddling with 0.010" wire"to make it functional that we are really talking about here, anyway.
The targets look like a good thing to etch, even if nothing else is, because it is hard to make something that thin that can be assembled as 2 planes crossing on a 90° angle. Still, mounting that assembly on that 0.010" wire might be somewhat tricky, unless it goes up along one of the 90° corners and we don't look at it from that side.
