Mmmmm.... I have the LV5, 7, 10, 15, 25 and yup, the 2" 50mm (my favourite) and yes they are still nice eyepieces - I keep them for messing around.
Also had a 6, 9 and 18 but sold them a few years ago. In addition to being good visually, they are excellent for focal photography with a compact camera, as the consistent eye relief puts the exit pupil right where you need it, in the front nodal point of the camera lens.
I did a comparison with my Edmund RKE's at one time, the LV's gave very very similar views however the LV's were much more comfortable to use. They're also better built and a boxed set looks gorgeous.
I'm fairly sure NLV's are optically the same with a rather ugly cell.
The 2" 30mm NLVW appears to really be the old LV30mm, mounted in a huge alloy cell. The optics are mounted in metal sleeve that screws into the cell.
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