For some high quality images of the 9x30 version, see those from 3mnich on the Polish site Optyczne at:
https://forum.optyczne.pl/viewtopic.php?t=13133&postdays=0&postorder=asc&start=25
3mnich comments (via Google Translate):
The production of Nikon H-Line binoculars was launched in 1976. The production wasn't very big and only lasted a few years as I found information from overseas,
these models were rarely sold. No wonder, comparing it with the twin Zeiss Classic 8x30, falls out poorly.
The optics are based on Schmidt-Pechan roof prisms, lenses with one anti-reflective coating, otherwise Nikon was not a strong competitor at that time.
Roofing as opposed to Porro.
The image is dark, has poor resolution and at least an apparent field is about 60 percent, the image blurs fairly quickly from the centre.
An interesting fact is that the movement was copied from the Dylats of the Zeiss 8x30 and 10x40 sharpening, consisting in the movement of the binocular lens.
The binoculars are solid and although they weigh only 440 grams, It is made entirely of metal except for the focus knob.
The upholstery is a leather-like material. The case is made of leather.
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Optyczne has an ongoing thread showing images and information for nearly 200 discontinued binoculars - it seem to be a neglected resource, at least in the English speaking world
Usefully the thread starts with an up-to-date alphabetic listing complete with hot links, see at:
https://forum.optyczne.pl/viewtopic.php?t=13133&postdays=0&postorder=asc&start=0
John